{"id":836,"date":"2023-09-06T12:33:41","date_gmt":"2023-09-06T12:33:41","guid":{"rendered":"https:\/\/exam.real4prep.com\/?p=836"},"modified":"2023-09-06T12:33:41","modified_gmt":"2023-09-06T12:33:41","slug":"all-obstacles-during-s90-08b-exam-preparation-with-s90-08b-real-test-questions-q10-q33","status":"publish","type":"post","link":"https:\/\/exam.real4prep.com\/zh\/2023\/09\/06\/all-obstacles-during-s90-08b-exam-preparation-with-s90-08b-real-test-questions-q10-q33\/","title":{"rendered":"All Obstacles During S90.08B Exam Preparation with S90.08B Real Test Questions [Q10-Q33]"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;836&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;1&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;4&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;4\\\/5 - (1 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;All Obstacles During S90.08B Exam Preparation with S90.08B Real Test Questions [Q10-Q33]&quot;,&quot;width&quot;:&quot;113.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 113.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            4\/5 - (1 vote)    <\/div>\n    <\/div>\n<p><span style=\"color: red;font-size: 18px\"><strong>All Obstacles During S90.08B Exam Preparation with S90.08B Real Test Questions<\/strong><\/span><\/p>\n<p><span style=\"color: red\"><strong>Fully Updated Free Actual SOA S90.08B Exam Questions<\/strong><\/span><\/p>\n<div id=\"watu_quiz\" class=\"quiz-area single-page-quiz\">\n<form action=\"\" method=\"post\" class=\"quiz-form \" id=\"quiz-367\" >\n<div class='watu-question' id='question-1'><div class='question-content'><p><strong>QUESTION 10<\/strong><br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-eb3698135b45482d3fe40b2fd52fe277.jpg\"\/><br \/>The architecture for Service A displayed in the figure shows how the core logic of Service A has expanded over time to connect to a database and a proprietary legacy system (1), and to support two separate service contracts (2) that are accessed by different service consumers.<br \/>The service contracts are fully decoupled from the service logic. The service logic is therefore coupled to the service contracts and to the underlying implementation resources (the database and the legacy system).<br \/>Service A currently has three service consumers. Service Consumer A and Service Consumer B access Service A&#8217;s two service contracts (3, 4). Service Consumer C bypasses the service contracts and accesses the service logic directly (5).<br \/>You are told that the database and legacy system that are currently being used by Service A are being replaced with different products. The two service contracts are completely decoupled from the core service logic, but there is still a concern that the introduction of the new products will cause the core service logic to behave differently than before.<br \/>What steps can be taken to change the Service A architecture in preparation for the introduction of the new products so that the impact on Service Consumers A and B is minimized? What further step can be taken to avoid consumer-to-implementation coupling with Service Consumer C?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7220' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27956' \/><div class='watu-question-choice'><input type='radio' name='answer-7220[]' id='answer-id-27956' class='answer answer-1 js-answer-label answerof-7220' value='27956' \/>&nbsp;<label for='answer-id-27956' id='answer-label-27956' class='js-answer-label answer label-1'><span class='answer'>The Service Fagade pattern can be applied to position fagade components between the core service logic and Service Consumers A and B. These fagade components will be designed to regulate the behavior of Service A. The Service Abstraction principle can be applied to hide the implementation details of the core service logic of Service A, thereby shielding this logic from changes to the implementation. The Schema Centralization pattern can be applied to force Service Consumer C to access Service A via one of its existing service contracts.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27957' \/><div class='watu-question-choice'><input type='radio' name='answer-7220[]' id='answer-id-27957' class='answer answer-1 js-answer-label answerof-7220' value='27957' \/>&nbsp;<label for='answer-id-27957' id='answer-label-27957' class='js-answer-label answer label-1'><span class='answer'>A third service contract can be added together with the application of the Contract Centralization pattern. This will force Service Consumer C to access Service A via the new service contract. The Service Fagade pattern can be applied to position a fagade component between the new service contract and Service Consumer C in order to regulate the behavior of Service A. The Service Abstraction principle can be applied to hide the implementation details of Service A so that no future service consumers are designed to access any of Service A&#8217;s underlying resources directly.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27958' \/><div class='watu-question-choice'><input type='radio' name='answer-7220[]' id='answer-id-27958' class='answer answer-1 js-answer-label answerof-7220' value='27958' \/>&nbsp;<label for='answer-id-27958' id='answer-label-27958' class='js-answer-label answer label-1'><span class='answer'>The Service Fagade pattern can be applied to position fagade components between the core service logic and the two service contracts. These fagade components will be designed to regulate the behavior of Service A. The Service Loose Coupling principle can be applied to avoid negative forms of coupling.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27959' \/><div class='watu-question-choice'><input type='radio' name='answer-7220[]' id='answer-id-27959' class='answer answer-1 php-answer-label answerof-7220' value='27959' \/>&nbsp;<label for='answer-id-27959' id='answer-label-27959' class='php-answer-label answer label-1'><span class='answer'>The Service Fagade pattern can be applied to position fagade components between the core service logic and the implementation resources (the database and the legacy system). These fagade components will be designed to insulate the core service logic of Service A from the changes in the underlying implementation resources. The Schema Centralization and Endpoint Redirection patterns can also be applied to force Service Consumer C to access Service A via one of its existing service contracts.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Explanation<br\/>The Service Fagade pattern can be applied to position fagade components between the core service logic and the implementation resources (the database and the legacy system). These fagade components will be designed to insulate the core service logic of Service A from the changes in the underlying implementation resources.<br\/>This will minimize the impact of the introduction of the new products on Service Consumers A and B since the service contracts are fully decoupled from the coreservice logic. The Schema Centralization and Endpoint Redirection patterns can also be applied to force Service Consumer C to access Service A via one of its existing service contracts, avoiding direct access to the core service logic and the underlying implementation resources.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(1,this)' id='btn-1' value='See Answer'  \/><input type='hidden' id='questionType1' value='radio' class=''><\/div><div class='watu-question' id='question-2'><div class='question-content'><p><strong>QUESTION 11<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-e433b1df3df8fe0fadcc5a65784577aa.jpg\"\/><br \/>Service A is a utility service that provides generic data access logic to a database containing data that is periodically replicated from a shared database (1). Because the Standardized Service Contract principle was applied to the design of Service A, its service contract has been fully standardized.<br \/>The service architecture of Service A Is being accessed by three service consumers. Service Consumer A accesses a component that is part of the Service A Implementation by Invoking it directly (2). Service Consumer B invokes Service A by accessing Its service contract (3). Service Consumer C directly accesses the replicated database that Is part of the Service A Implementation (4).<br \/>You&#8217;ve been told that the reason Service Consumers A and C bypass the published Service A service contract is because, for security reasons, they are not allowed to access a subset of the capabilities in the API that comprises the Service A service contract. How can the Service A architecture be changed to enforce these security restrictions while avoiding negative forms of coupling?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7221' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27960' \/><div class='watu-question-choice'><input type='radio' name='answer-7221[]' id='answer-id-27960' class='answer answer-2 js-answer-label answerof-7221' value='27960' \/>&nbsp;<label for='answer-id-27960' id='answer-label-27960' class='js-answer-label answer label-2'><span class='answer'>The Contract Centralization pattern can be applied to force all service consumers to access the Service A architecture via its published service contract. This will prevent negative forms of coupling that could lead to problems when the database is replaced. The Service Abstraction principle can then be applied to hide underlying service architecture details so that future service consumers cannot be designed to access any part of the underlying service implementation.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27961' \/><div class='watu-question-choice'><input type='radio' name='answer-7221[]' id='answer-id-27961' class='answer answer-2 js-answer-label answerof-7221' value='27961' \/>&nbsp;<label for='answer-id-27961' id='answer-label-27961' class='js-answer-label answer label-2'><span class='answer'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Service Loose Coupling principle can then be applied to ensure that the centralized service contract does not contain any content that is dependent on or derived from the underlying service implementation.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27962' \/><div class='watu-question-choice'><input type='radio' name='answer-7221[]' id='answer-id-27962' class='answer answer-2 php-answer-label answerof-7221' value='27962' \/>&nbsp;<label for='answer-id-27962' id='answer-label-27962' class='php-answer-label answer label-2'><span class='answer'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Concurrent Contracts pattern can be applied to Service A in order to establish one or more alternative service contracts. This allows service consumers with different levels of authorization to access different types of service logic via Service A&#8217;s published service contracts.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27963' \/><div class='watu-question-choice'><input type='radio' name='answer-7221[]' id='answer-id-27963' class='answer answer-2 js-answer-label answerof-7221' value='27963' \/>&nbsp;<label for='answer-id-27963' id='answer-label-27963' class='js-answer-label answer label-2'><span class='answer'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Idempotent Capability pattern can be applied to Service A to establish alternative sets of service capabilities for service consumers with different levels of authorization.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Service Loose Coupling principle can then be applied to ensure that the centralized service contract does not contain any content that is dependent on or derived from the underlying service implementation. This will enforce the security restrictions while avoiding negative forms of coupling. By ensuring loose coupling, changes to the implementation of Service A will not require changes to its published service contract, making it easier to maintain and evolve the service.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(2,this)' id='btn-2' value='See Answer'  \/><input type='hidden' id='questionType2' value='radio' class=''><\/div><div class='watu-question' id='question-3'><div class='question-content'><p><strong>QUESTION 12<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-f1de3332839c5a87634212104d2263de.jpg\"\/><br \/>Service Consumer A and Service A reside in Service Inventory A. Service B and Service C reside in Service Inventory B. Service D is a public service that can be openly accessed via the World Wide Web. The service is also available for purchase so that it can be deployed independently within IT enterprises. Due to the rigorous application of the Service Abstraction principle within Service Inventory B, the only information that is made available about Service B and Service C are the published service contracts. For Service D, the service contract plus a service level agreement (SLA) are made available. The SLA indicates that Service D has a planned outage every night from 11:00pm to midnight.<br \/>You are an architect with a project team that is building services for Service Inventory A. You are told that the owners of Service Inventory A and Service Inventory B are not generally cooperative or communicative. Cross-inventory service composition is tolerated, but not directly supported. As a result, no SLAs for Service B and Service C are available and you have no knowledge about how available these services are. Based on the service contracts you can determine that the services in Service Inventory B use different data models and a different transport protocol than the services in Service Inventory A. Furthermore, recent testing results have shown that the performance of Service D is highly unpredictable due to the heavy amount of concurrent access it receives from service consumers from other organizations. You are also told that there is a concern over how long Service Consumer A will need to remain stateful while waiting for a response from Service A.<br \/>What steps can be taken to solve these problems?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7222' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27964' \/><div class='watu-question-choice'><input type='radio' name='answer-7222[]' id='answer-id-27964' class='answer answer-3 js-answer-label answerof-7222' value='27964' \/>&nbsp;<label for='answer-id-27964' id='answer-label-27964' class='js-answer-label answer label-3'><span class='answer'>The Event-Driven Messaging pattern can be applied to establish a subscriber-publisher relationship between Service Consumer A and Service A. This gives Service A the flexibility to provide its response to Service Consumer A whenever it is able to collect the three data values without having to require that Service Consumer A remain stateful. The Asynchronous Queuing pattern can be applied to position a central messaging queue between Service A and Service B and between Service A and Service C. The Data Model Transformation and Protocol Bridging patterns can be applied to enable communication between Service A and Service B and between Service A and Service C. The Redundant Implementation pattern can be applied so that a copy of Service D is brought in-house and made part of Service Inventory A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27965' \/><div class='watu-question-choice'><input type='radio' name='answer-7222[]' id='answer-id-27965' class='answer answer-3 js-answer-label answerof-7222' value='27965' \/>&nbsp;<label for='answer-id-27965' id='answer-label-27965' class='js-answer-label answer label-3'><span class='answer'>The Asynchronous Queuing pattern can be applied to position a central messaging queue between Service A and Service B and between Service A and Service C and so that a separate messaging queue is positioned between Service A and Service Consumer A. The Data Model Transformation and Protocol Bridging patterns can be applied to enable communication between Service A and Service B and between Service A and Service C. The Redundant Implementation pattern can be applied so that a copy of Service D is brought in-house. The Legacy Wrapper pattern can be further applied to wrap Service D with a standardized service contract that is in compliance with the design standards used in Service Inventory A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27966' \/><div class='watu-question-choice'><input type='radio' name='answer-7222[]' id='answer-id-27966' class='answer answer-3 js-answer-label answerof-7222' value='27966' \/>&nbsp;<label for='answer-id-27966' id='answer-label-27966' class='js-answer-label answer label-3'><span class='answer'>The Containerization pattern can be applied to establish an environment for Service A to perform its processing autonomously. This gives Service A the flexibility to provide Service Consumer A with response messages consistently. The Asynchronous Queuing pattern can be applied so that a central messaging queue is positioned between Service A and Service B, between Service A and Service C, and between Service A and Service D. The Data Model Transformation and Protocol Bridging patterns can be applied to enable communication between Service A and Service B and between Service A and Service C.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27967' \/><div class='watu-question-choice'><input type='radio' name='answer-7222[]' id='answer-id-27967' class='answer answer-3 php-answer-label answerof-7222' value='27967' \/>&nbsp;<label for='answer-id-27967' id='answer-label-27967' class='php-answer-label answer label-3'><span class='answer'>The Asynchronous Queuing pattern can be applied to position a message queue between Service A and Service B, between Service A and Service C, and between Service A and Service D. Additionally, a separate messaging queue is positioned between Service A and Service Consumer A. The Data Model Transformation and Protocol Bridging patterns can be applied to enable communication between Service A and Service B, between Service A and Service C, and between Service A and Service D. The Redundant Implementation pattern can be applied so that a copy of Service D is brought in-house. The Legacy Wrapper pattern can be further applied to wrap Service D with a standardized service contract that is in compliance with the design standards used in Service Inventory B.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The Asynchronous Queuing pattern is applied to position a messaging queue between Service A, Service B, Service C, Service D, and Service Consumer A. This ensures that messages can be passed between these services without having to be in a stateful mode.<br\/>The Data Model Transformation and Protocol Bridging patterns are applied to enable communication between Service A and Service B, Service A and Service C, and Service A and Service D, despite their different data models and transport protocols.<br\/>The Redundant Implementation pattern is applied to bring a copy of Service D in-house to ensure that it can be accessed locally and reduce the unpredictability of its performance.<br\/>The Legacy Wrapper pattern is applied to wrap Service D with a standardized service contract that complies with the design standards used in Service Inventory B. This is useful for service consumers who want to use Service D but do not want to change their existing applications or service contracts.<br\/>Overall, this approach provides a comprehensive solution that addresses the issues with Service A, Service B, Service C, and Service D, while maintaining compliance with the Service Abstraction principle.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(3,this)' id='btn-3' value='See Answer'  \/><input type='hidden' id='questionType3' value='radio' class=''><\/div><div class='watu-question' id='question-4'><div class='question-content'><p><strong>QUESTION 13<\/strong><br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-8706f666f9d91685d7b3234acf76f7b0.jpg\"\/><br \/>Service A is an entity service that provides a Get capability which returns a data value that is frequently changed.<br \/>Service Consumer A invokes Service A in order to request this data value (1). For Service A to carry out this request, it must invoke Service B (2), a utility service that interacts (3, 4) with the database in which the data value is stored. Regardless of whether the data value changed, Service B returns the latest value to Service A (5), and Service A returns the latest value to Service Consumer A (6).<br \/>The data value is changed when the legacy client program updates the database (7). When this change will occur is not predictable. Note also that Service A and Service B are not always available at the same time.<br \/>Any time the data value changes, Service Consumer A needs to receive It as soon as possible. Therefore, Service Consumer A initiates the message exchange shown In the figure several times a day. When it receives the same data value as before, the response from Service A Is ignored. When Service A provides an updated data value, Service Consumer A can process it to carry out its task.<br \/>The current service composition architecture is using up too many resources due to the repeated invocation of Service A by Service Consumer A and the resulting message exchanges that occur with each invocation.<br \/>What steps can be taken to solve this problem?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7223' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27968' \/><div class='watu-question-choice'><input type='radio' name='answer-7223[]' id='answer-id-27968' class='answer answer-4 php-answer-label answerof-7223' value='27968' \/>&nbsp;<label for='answer-id-27968' id='answer-label-27968' class='php-answer-label answer label-4'><span class='answer'>The Event-Driven Messaging pattern can be applied by establishing a subscriber-publisher relationship between Service A and Service B. This way, every time the data value is updated, an event is triggered and Service B, acting as the publisher, can notify Service A, which acts as the subscriber. The Asynchronous Queuing pattern can be applied between Service A and Service B so that the event notification message sent out by Service B will be received by Service A, even when Service A is unavailable.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27969' \/><div class='watu-question-choice'><input type='radio' name='answer-7223[]' id='answer-id-27969' class='answer answer-4 js-answer-label answerof-7223' value='27969' \/>&nbsp;<label for='answer-id-27969' id='answer-label-27969' class='js-answer-label answer label-4'><span class='answer'>The Event-Driven Messaging pattern can be applied by establishing a subscriber-publisher relationship between Service Consumer A and Service A. This way, every time the data value is updated, an event is triggered and Service A, acting as the publisher, can notify Service Consumer A, which acts as the subscriber. The Asynchronous Queuing pattern can be applied between Service Consumer A and Service A so that the event notification message sent out by Service A will be received by Service Consumer A, even when Service Consumer A is unavailable.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27970' \/><div class='watu-question-choice'><input type='radio' name='answer-7223[]' id='answer-id-27970' class='answer answer-4 js-answer-label answerof-7223' value='27970' \/>&nbsp;<label for='answer-id-27970' id='answer-label-27970' class='js-answer-label answer label-4'><span class='answer'>The Asynchronous Queuing pattern can be applied so that messaging queues are established between Service A and Service B and between Service Consumer A and Service A. This way, messages are never lost due to the unavailability of Service A or Service B.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27971' \/><div class='watu-question-choice'><input type='radio' name='answer-7223[]' id='answer-id-27971' class='answer answer-4 js-answer-label answerof-7223' value='27971' \/>&nbsp;<label for='answer-id-27971' id='answer-label-27971' class='js-answer-label answer label-4'><span class='answer'>The Event-Driven Messaging pattern can be applied by establishing a subscriber-publisher relationship between Service Consumer A and a database monitoring agent introduced through the application of the Service Agent pattern. The database monitoring agent monitors updates made by the legacy client to the database. This way, every time the data value is updated, an event is triggered and the database monitoring agent, acting as the publisher, can notify Service Consumer A, which acts as the subscriber.<br \/>The Asynchronous Queuing pattern can be applied between Service Consumer A and the database monitoring agent so that the event notification message sent out by the database monitoring agent will be received by Service Consumer A, even when Service Consumer A is unavailable.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Explanation<br\/>This solution is the most appropriate one among the options presented. By using the Event-Driven Messaging pattern, Service A can be notified of changes to the data value without having to be invoked repeatedly by Service Consumer A, which reduces the resources required for message exchange. Asynchronous Queuing ensures that the event notification message is not lost due to the unavailability of Service A or Service B. This approach improves the efficiency of the service composition architecture.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(4,this)' id='btn-4' value='See Answer'  \/><input type='hidden' id='questionType4' value='radio' class=''><\/div><div class='watu-question' id='question-5'><div class='question-content'><p><strong>QUESTION 14<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-54fc674ace28bf187e15c281652771bd.jpg\"\/><br \/>Services A, B, and C are non-agnostic task services. Service A and Service B use the same shared state database to defer their state data at runtime.<br \/>An assessment of the three services reveals that each contains some agnostic logic that cannot be made available for reuse because it is bundled together with non-agnostic logic.<br \/>The assessment also determines that because Service A, Service B and the shared state database are each located in physically separate environments, the remote communication required for Service A and Service B to interact with the shared state database is causing an unreasonable decrease in runtime performance.<br \/>How can the application of the Orchestration pattern improve this architecture?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7224' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27972' \/><div class='watu-question-choice'><input type='radio' name='answer-7224[]' id='answer-id-27972' class='answer answer-5 js-answer-label answerof-7224' value='27972' \/>&nbsp;<label for='answer-id-27972' id='answer-label-27972' class='js-answer-label answer label-5'><span class='answer'>The application of the Orchestration pattern will result in an environment whereby the Official Endpoint, State Repository, and Service Data Replication patterns are automatically applied, allowing the shared state database to be replicated via official service endpoints for Services A and B so that each task service can have its own dedicated state database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27973' \/><div class='watu-question-choice'><input type='radio' name='answer-7224[]' id='answer-id-27973' class='answer answer-5 php-answer-label answerof-7224' value='27973' \/>&nbsp;<label for='answer-id-27973' id='answer-label-27973' class='php-answer-label answer label-5'><span class='answer'>The application of the Orchestration pattern will result in an environment whereby the non-agnostic logic can be cleanly separated from the agnostic logic that exists in Services A, B, and C, resulting in the need to design new agnostic services with reuse potential assured through the application of the Service Reusability principle. The State Repository pattern, which is supported by and local to the orchestration environment, provides a central state database that can be shared by Services A and B. The local state database avoids problems with remote communication.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27974' \/><div class='watu-question-choice'><input type='radio' name='answer-7224[]' id='answer-id-27974' class='answer answer-5 js-answer-label answerof-7224' value='27974' \/>&nbsp;<label for='answer-id-27974' id='answer-label-27974' class='js-answer-label answer label-5'><span class='answer'>The application of the Orchestration pattern will result in an environment whereby the Compensating Service Transaction is automatically applied, resulting In the opportunity to create sophisticated exception logic that can be used to compensate for the performance problems caused by Services A and B having to remotely access the state database. The API Gateway and Service Broker patterns are also automatically applied, providing common transformation functions in a centralized processing layer to help overcome any disparity in the service contracts that will need to be created for the new agnostic services.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27975' \/><div class='watu-question-choice'><input type='radio' name='answer-7224[]' id='answer-id-27975' class='answer answer-5 js-answer-label answerof-7224' value='27975' \/>&nbsp;<label for='answer-id-27975' id='answer-label-27975' class='js-answer-label answer label-5'><span class='answer'>The Orchestration pattern is not applicable to this architecture because it does not support the hosting of the required state repository.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The application of the Orchestration pattern can improve this architecture by cleanly separating the non-agnostic logic from the agnostic logic, allowing the design of new agnostic services with reuse potential. The State Repository pattern, which is supported by and local to the orchestration environment, provides a central state database that can be shared by Services A and B. The local state database avoids problems with remote communication. Additionally, the Orchestration pattern provides a central controller that can coordinate the interactions between Services A, B, and C, reducing the need for remote communication between services and improving runtime performance.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(5,this)' id='btn-5' value='See Answer'  \/><input type='hidden' id='questionType5' value='radio' class=''><\/div><div class='watu-question' id='question-6'><div class='question-content'><p><strong>QUESTION 15<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-a6f2a1a8bc3f240c2f5fac2543a50f28.jpg\"\/><br \/>The Client and Vendor services are agnostic services that are both currently part of multiple service compositions. As a result, these services are sometimes subjected to concurrent access by multiple service consumers.<br \/>The Client service primarily provides data access logic to a client database but also coordinates with other services to determine a clients credit rating. The Vendor service provides some data access logic but can also generate various dynamic reports based on specialized business requirements.<br \/>After reviewing historical statistics about the runtime activity of the two services, it is discovered that the Client service is serving an ever-increasing number of service consumers. It is regularly timing out, which in turn increases its call rate as service consumers retry their requests. The Vendor service occasionally has difficulty meeting its service-level agreement (SLA) and when this occurs, penalties are assessed.<br \/>Recently, the custodian of the Client service was notified that the Client service will be made available to new service consumers external to its service inventory. The Client service will be providing free credit rating scores to any service consumer that connects to the service via the Internet. The Vendor service will remain internal to the service inventory and will not be exposed to external access.<br \/>Which of the following statements describes a solution that addresses these issues and requirements?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7225' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27976' \/><div class='watu-question-choice'><input type='radio' name='answer-7225[]' id='answer-id-27976' class='answer answer-6 php-answer-label answerof-7225' value='27976' \/>&nbsp;<label for='answer-id-27976' id='answer-label-27976' class='php-answer-label answer label-6'><span class='answer'>The API Gateway pattern, together with the Inventory Endpoint pattern, can be applied to the service inventory to establish an inventory endpoint service and an intermediary layer of processing that will be accessed by external service consumers and that will interact with the Client service to process external service consumer requests. The Redundant Implementation pattern can be applied to both the Client and Vendor services to increase their availability and scalability.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27977' \/><div class='watu-question-choice'><input type='radio' name='answer-7225[]' id='answer-id-27977' class='answer answer-6 js-answer-label answerof-7225' value='27977' \/>&nbsp;<label for='answer-id-27977' id='answer-label-27977' class='js-answer-label answer label-6'><span class='answer'>The Official Endpoint pattern can be applied to the Client service to establish a managed endpoint for consumption by service consumers external to the service inventory. The Concurrent Contracts pattern can be applied to the Vendor service, enabling it to connect with alternative Client service implementation, should the first attempt to connect fail.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27978' \/><div class='watu-question-choice'><input type='radio' name='answer-7225[]' id='answer-id-27978' class='answer answer-6 js-answer-label answerof-7225' value='27978' \/>&nbsp;<label for='answer-id-27978' id='answer-label-27978' class='js-answer-label answer label-6'><span class='answer'>The State Repository pattern can be applied to the Client and Vendor services to establish a central statement management database that can be used to overcome runtime performance problems. The Official Endpoint pattern can be further applied to increase the availability and scalability of the Client service for service consumers external to the service inventory.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27979' \/><div class='watu-question-choice'><input type='radio' name='answer-7225[]' id='answer-id-27979' class='answer answer-6 js-answer-label answerof-7225' value='27979' \/>&nbsp;<label for='answer-id-27979' id='answer-label-27979' class='js-answer-label answer label-6'><span class='answer'>The Microservice Deployment pattern is applied to the Client service to improve its autonomy and responsiveness to a greater range of service consumers. The Containerization pattern is applied to the Vendor service to establish a managed environment with a high degree of isolation for its report-related processing. The Endpoint Redirection pattern is further applied to ensure that request messages from service consumers outside of the service inventory are redirected away from the Client service.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>This solution addresses the specific requirements and issues identified in the scenario. The Official Endpoint pattern can be applied to the Client service to establish a managed endpoint for consumption by service consumers external to the service inventory, which will allow for controlled and managed access to the service. The Concurrent Contracts pattern can be applied to the Vendor service, which will enable it to connect with alternative Client service implementation if the first attempt to connect fails, thereby increasing its availability and reducing the possibility of penalties being assessed due to not meeting its SLA.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(6,this)' id='btn-6' value='See Answer'  \/><input type='hidden' id='questionType6' value='radio' class=''><\/div><div class='watu-question' id='question-7'><div class='question-content'><p><strong>QUESTION 16<\/strong><br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-9c0f5fe6ef1c6af13e58db468ac9736f.jpg\"\/><br \/>Service A sends a message to Service B (1). After Service B writes the message contents to Database A (2), it issues a response message back to Service A (3). Service A then sends a message to Service C (4). Upon receiving this message, Service C sends a message to Service D (5), which then writes the message contents to Database B (6) and issues a response message back to Service C (7).<br \/>Service A and Service D are located in Service Inventory A. Service B and Service C are located in Service Inventory B.<br \/>You are told that In this service composition architecture, all four services are exchanging invoice-related data in an XML format. However, the services in Service Inventory A are standardized to use a different XML schema for invoice data than the services in Service Inventory B. Also, Database A can only accept data in the Comma Separated Value (CSV) format and therefore cannot accept XML-formatted data. Database B only accepts XML-formatted data. However, it is a legacy database that uses a proprietary XML schema to represent invoice data that is different from the XML schema used by services in Service Inventory A or Service Inventory B.<br \/>What steps can be taken to enable the planned data exchange between these four services?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7226' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27980' \/><div class='watu-question-choice'><input type='radio' name='answer-7226[]' id='answer-id-27980' class='answer answer-7 js-answer-label answerof-7226' value='27980' \/>&nbsp;<label for='answer-id-27980' id='answer-label-27980' class='js-answer-label answer label-7'><span class='answer'>The Data Model Transformation pattern can be applied so that data model transformation logic is positioned between Service A and Service B, between Service C and Service D, and between the Service D logic and Database B. The Data Format Transformation pattern can be applied so that data format transformation logic is positioned between Service A and Service C, and between the Service B logic and Database A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27981' \/><div class='watu-question-choice'><input type='radio' name='answer-7226[]' id='answer-id-27981' class='answer answer-7 js-answer-label answerof-7226' value='27981' \/>&nbsp;<label for='answer-id-27981' id='answer-label-27981' class='js-answer-label answer label-7'><span class='answer'>The Protocol Bridging pattern can be applied so that protocol conversion logic is positioned between the Service B logic and Database A. The Data Format Transformation pattern can be applied so that data format transformation logic is positioned between Service A and Service B, between Service A and Service C, between Service C and Service D, and between the Service D logic and Database B.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27982' \/><div class='watu-question-choice'><input type='radio' name='answer-7226[]' id='answer-id-27982' class='answer answer-7 php-answer-label answerof-7226' value='27982' \/>&nbsp;<label for='answer-id-27982' id='answer-label-27982' class='php-answer-label answer label-7'><span class='answer'>The Data Model Transformation pattern can be applied so that data model transformation logic is positioned between Service A and Service B, between Service A and Service C, between Service C andService D, and between the Service D logic and Database B. The Data Format Transformation pattern can be applied so that data format transformation logic is positioned between the Service B logic and Database A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27983' \/><div class='watu-question-choice'><input type='radio' name='answer-7226[]' id='answer-id-27983' class='answer answer-7 js-answer-label answerof-7226' value='27983' \/>&nbsp;<label for='answer-id-27983' id='answer-label-27983' class='js-answer-label answer label-7'><span class='answer'>The Protocol Bridging pattern can be applied so that protocol conversion logic is positioned between Service A and Service B, between Service A and Service C, and between Service C and Service D. The Data Format Transformation pattern can be applied so that data format transformation logic is positioned between the Service B logic and Database A and between the Service D logic and Database B<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Explanation<br\/>This solution addresses the two main challenges in the service composition architecture: the different XML schema used by services in Service Inventory A and Service Inventory B, and the incompatible data formats of the two databases.<br\/>By applying the Data Model Transformation pattern, data model transformation logic can be inserted to map the invoice-related data between the different XML schemas used by the services in Service Inventory A and Service Inventory B. This can be done at the appropriate points in the message flow: between Service A and Service B, between Service A and Service C, between Service C and Service D, and between the Service D logic and Database B.<br\/>By applying the Data Format Transformation pattern, data format transformation logic can be inserted to convert the XML-formatted data used by the services to the CSV format required by Database A, and to convert the proprietary XML schema used by Database B to the XML schema used by the services. This can be done between the Service B logic and Database A.<br\/>The Protocol Bridging pattern is not necessary in this case because all services are already communicating using the same protocol (presumably HTTP or a similar protocol).<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(7,this)' id='btn-7' value='See Answer'  \/><input type='hidden' id='questionType7' value='radio' class=''><\/div><div class='watu-question' id='question-8'><div class='question-content'><p><strong>QUESTION 17<\/strong><br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-ff341be4a851d66f05af7504a9b0596f.jpg\"\/><br \/>Service A is a utility service that provides generic data access logic to a database containing data that is periodically replicated from a shared database (1). Because the Standardized Service Contract principle was applied to the design of Service A, its service contract has been fully standardized.<br \/>The service architecture of Service A Is being accessed by three service consumers. Service Consumer A accesses a component that is partof the Service A Implementation by Invoking it directly (2). Service Consumer B invokes Service A by accessing Its service contract (3). Service Consumer C directly accesses the replicated database that Is part of the Service A Implementation (4).<br \/>You&#8217;ve been told that the reason Service Consumers A and C bypass the published Service A service contract is because, for security reasons, they are not allowed to access a subset of the capabilities inthe API that comprises the Service A service contract. How can the Service A architecture be changed to enforce these security restrictions while avoiding negative forms of coupling?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7227' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27984' \/><div class='watu-question-choice'><input type='radio' name='answer-7227[]' id='answer-id-27984' class='answer answer-8 js-answer-label answerof-7227' value='27984' \/>&nbsp;<label for='answer-id-27984' id='answer-label-27984' class='js-answer-label answer label-8'><span class='answer'>The Contract Centralization pattern can be applied to force all service consumers to access the Service A architecture via its published service contract. This will prevent negative forms of coupling that could lead to problems when the database is replaced. The Service Abstraction principle can then be applied to hide underlying service architecture details so that future service consumers cannot be designed to access any part of the underlying service implementation.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27985' \/><div class='watu-question-choice'><input type='radio' name='answer-7227[]' id='answer-id-27985' class='answer answer-8 php-answer-label answerof-7227' value='27985' \/>&nbsp;<label for='answer-id-27985' id='answer-label-27985' class='php-answer-label answer label-8'><span class='answer'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Service Loose Coupling principle can then be applied to ensure that the centralized service contract does not contain any content that is dependent on or derived from the underlying service implementation.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27986' \/><div class='watu-question-choice'><input type='radio' name='answer-7227[]' id='answer-id-27986' class='answer answer-8 js-answer-label answerof-7227' value='27986' \/>&nbsp;<label for='answer-id-27986' id='answer-label-27986' class='js-answer-label answer label-8'><span class='answer'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Concurrent Contracts pattern can be applied to Service A in order to establish one or more alternative service contracts. This allows service consumers with different levels of authorization to access different types of service logic via Service A&#8217;s published service contracts.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27987' \/><div class='watu-question-choice'><input type='radio' name='answer-7227[]' id='answer-id-27987' class='answer answer-8 js-answer-label answerof-7227' value='27987' \/>&nbsp;<label for='answer-id-27987' id='answer-label-27987' class='js-answer-label answer label-8'><span class='answer'>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Idempotent Capability pattern can be applied to Service A to establish alternative sets of service capabilities for service consumers with different levels of authorization.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Explanation<br\/>The Contract Centralization pattern can be applied to force service consumers to access the Service A architecture via its published service contract only. The Service Loose Coupling principle can then be applied to ensure that the centralized service contract does not contain any content that is dependent on or derived from the underlying service implementation. This will enforce the security restrictions while avoiding negative forms of coupling. By ensuring loose coupling, changes to the implementation of Service A will not require changes to its published service contract, making it easier to maintain and evolve the service.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(8,this)' id='btn-8' value='See Answer'  \/><input type='hidden' id='questionType8' value='radio' class=''><\/div><div class='watu-question' id='question-9'><div class='question-content'><p><strong>QUESTION 18<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-ffc74b8f957a2bcb211e6f14ee2bfa7c.jpg\"\/><br \/>Service Consumer A sends a message to Service A (1), which then forwards the message to Service B (2). Service B forwards the message to Service C (3), which finally forwards the message to Service D (4). However, Services A, B and C each contain logic that reads the contents of the message to determine what intermediate processing to perform and which service to forward the message to. As a result, what is shown in the diagram is only one of several possible runtime scenarios.<br \/>Currently, this service composition architecture is performing adequately, despite the number of services that can be involved in the transmission of one message. However, you are told that new logic is being added to Service A that will require it to compose one other service to retrieve new data at runtime that Service A will need access to in order to determine where to forward the message to. The involvement of the additional service will make the service composition too large and slow.<br \/>What steps can be taken to improve the service composition architecture while still accommodating the new requirements and avoiding an increase in the amount of service composition members?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7228' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27988' \/><div class='watu-question-choice'><input type='radio' name='answer-7228[]' id='answer-id-27988' class='answer answer-9 js-answer-label answerof-7228' value='27988' \/>&nbsp;<label for='answer-id-27988' id='answer-label-27988' class='js-answer-label answer label-9'><span class='answer'>The Service Instance Routing pattern can be applied to introduce a Routing service to provide a centralized service to contain routing-related business rules. This new Routing service can be accessed by Service A and Service C so they can determine where to forward messages to at runtime. The Service Reusability principle can be further applied to ensure that the logic in all remaining services is designed to be multi-purpose and reusable.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27989' \/><div class='watu-question-choice'><input type='radio' name='answer-7228[]' id='answer-id-27989' class='answer answer-9 js-answer-label answerof-7228' value='27989' \/>&nbsp;<label for='answer-id-27989' id='answer-label-27989' class='js-answer-label answer label-9'><span class='answer'>The Asynchronous Queuing pattern can be applied together with a Routing service that is invoked by messages read from a messaging queue. This new Routing service can replace Service B and can be accessed by Service A and Service C so they can determine where to forward messages to at runtime. The Service Loose Coupling principle can be further applied to ensure that the new Routing service remains decoupled from other services so that it can perform its routing functions independently from service contract invocation.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27990' \/><div class='watu-question-choice'><input type='radio' name='answer-7228[]' id='answer-id-27990' class='answer answer-9 js-answer-label answerof-7228' value='27990' \/>&nbsp;<label for='answer-id-27990' id='answer-label-27990' class='js-answer-label answer label-9'><span class='answer'>The Intermediate Routing pattern can be applied together with the Service Agent pattern by removing Service B or Service C from the service composition and replacing it with a service agent capable of intercepting and forwarding the message at runtime based on pre-defined routing logic. The Service Discoverability principle can be further applied to ensure that Service A can be found by any future service consumers.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27991' \/><div class='watu-question-choice'><input type='radio' name='answer-7228[]' id='answer-id-27991' class='answer answer-9 php-answer-label answerof-7228' value='27991' \/>&nbsp;<label for='answer-id-27991' id='answer-label-27991' class='php-answer-label answer label-9'><span class='answer'>The Intermediate Routing pattern can be applied together with the Service Agent pattern to establish a service agent capable of intercepting and forwarding the message at runtime based on pre-defined routing logic. The Service Composability principle can be further applied to ensure that all services are designed as effective service composition participants.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>This solution addresses the issue of the service composition becoming too large and slow by introducing a new Routing service that is invoked by messages read from a messaging queue. This allows Service A and Service C to determine where to forward messages to at runtime without the need for additional services in the composition. The Service Loose Coupling principle is applied to ensure that the new Routing service remains decoupled from other services so that it can perform its routing functions independently from service contract invocation.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(9,this)' id='btn-9' value='See Answer'  \/><input type='hidden' id='questionType9' value='radio' class=''><\/div><div class='watu-question' id='question-10'><div class='question-content'><p><strong>QUESTION 19<\/strong><br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-0db484bc9bbeaa49965f4c7e73b06afe.jpg\"\/><br \/>Service Consumer A sends a message to Service A. There are currently three duplicate implementations of Service A (Implementation 1, Implementation 2 and Implementation 3). The message sent by Service Consumer A is intercepted by Service Agent A (1), which determines at runtime which implementation of Service A to forward the message to. All three implementations of Service A reside on the same physical server.<br \/>You are told that despite the fact that duplicate implementations of Service A exist, performance is still poor at times. You are also informed that a new service capability will soon need to be added to Service A to introduce functionality that will require access to a shared database being used by many other clients and applications in the IT enterprise. This is expected to add further performance demands on Service A.<br \/>How can this service architecture be changed to improve performance in preparation for the addition of the new service capability?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7229' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27992' \/><div class='watu-question-choice'><input type='radio' name='answer-7229[]' id='answer-id-27992' class='answer answer-10 js-answer-label answerof-7229' value='27992' \/>&nbsp;<label for='answer-id-27992' id='answer-label-27992' class='js-answer-label answer label-10'><span class='answer'>The Standardized Service Contract principle can be applied to ensure that the new service capability extends the existing service contract in a manner that is compliant with current design standards. The Redundant Implementation pattern can be applied to establish separate implementations of Service A that include duplicate databases with copies of the data that Service A requires from the shared database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27993' \/><div class='watu-question-choice'><input type='radio' name='answer-7229[]' id='answer-id-27993' class='answer answer-10 php-answer-label answerof-7229' value='27993' \/>&nbsp;<label for='answer-id-27993' id='answer-label-27993' class='php-answer-label answer label-10'><span class='answer'>The Service Autonomy principle can be applied to further isolate the individual implementations of Service A by separating them onto different physical servers. When the new service capability is added, the Service Data Replication pattern can be applied to give each implementation of Service A its own copy of the data it requires from the shared database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27994' \/><div class='watu-question-choice'><input type='radio' name='answer-7229[]' id='answer-id-27994' class='answer answer-10 js-answer-label answerof-7229' value='27994' \/>&nbsp;<label for='answer-id-27994' id='answer-label-27994' class='js-answer-label answer label-10'><span class='answer'>The Service Loose Coupling principle can be applied together with the Standardized Service Contract principle to ensure that Service Consumer A is not indirectly coupled to the shared database after the new service capability is added to the service contract. The Legacy Wrapper pattern can be applied to establish a new utility service that will provide standardized data access service capabilities for the shared database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27995' \/><div class='watu-question-choice'><input type='radio' name='answer-7229[]' id='answer-id-27995' class='answer answer-10 js-answer-label answerof-7229' value='27995' \/>&nbsp;<label for='answer-id-27995' id='answer-label-27995' class='js-answer-label answer label-10'><span class='answer'>The Service Autonomy principle can be applied to further isolate the individual implementations of Service A by separating them onto different physical servers. When the new service capability is added, the State Repository pattern can be applied to give each implementation of Service A its own copy of the data it requires from the shared database.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Explanation<br\/>By separating the individual implementations of Service A onto different physical servers, they can be isolated from each other and from other clients and applications in the IT enterprise, which can help improve performance. Additionally, using the Service Data Replication pattern to give each implementation of Service A its own copy of the data it requires from the shared database can help reduce the load on the shared database and improve performance. This can be especially important when a new service capability is added that requires access to the shared database, as it can help ensure that the performance of Service A is not impacted by the additional demands placed on the shared database.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(10,this)' id='btn-10' value='See Answer'  \/><input type='hidden' id='questionType10' value='radio' class=''><\/div><div class='watu-question' id='question-11'><div class='question-content'><p><strong>QUESTION 20<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-52c18970e02ab2fc4ece71686cd4b3ba.jpg\"\/><br \/>Service A is an entity service that provides a set of generic and reusable service capabilities. In order to carry out the functionality of any one of its service capabilities, Service A is required to compose Service B (1) and Service C (2), and Service A is required to access Database A (3), Database B (4), and Database C (5). These three databases are shared by other applications within the IT enterprise.<br \/>All of service capabilities provided by Service A are synchronous, which means that for each request a service consumer makes, Service A is required to issue a response message after all of the processing has completed.<br \/>Service A is one of many entity services that reside In a highly normalized service Inventory. Because Service A provides agnostic logic, it is heavily reused and is currently part of many service compositions.<br \/>You are told that Service A has recently become unstable and unreliable. The problem has been traced to two issues with the current service architecture. First, Service B, which Is also an entity service, is being increasingly reused and has itself become unstable and unreliable. When Service B fails, the failure is carried over to Service A.<br \/>Secondly, shared Database B has a complex data model. Some of the queries issued by Service A to shared Database B can take a very long time to complete.<br \/>What steps can be taken to solve these problems without compromising the normalization of the service inventory?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7230' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27996' \/><div class='watu-question-choice'><input type='radio' name='answer-7230[]' id='answer-id-27996' class='answer answer-11 js-answer-label answerof-7230' value='27996' \/>&nbsp;<label for='answer-id-27996' id='answer-label-27996' class='js-answer-label answer label-11'><span class='answer'>The Redundant Implementation pattern can be applied to Service A, thereby making duplicate deployments of the service available. This way, when one implementation of Service A is too busy, another implementation can be accessed by service consumers instead. The Service Data Replication pattern can be applied to establish a dedicated database that contains an exact copy of the data from shared Database B that is required by Service A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27997' \/><div class='watu-question-choice'><input type='radio' name='answer-7230[]' id='answer-id-27997' class='answer answer-11 js-answer-label answerof-7230' value='27997' \/>&nbsp;<label for='answer-id-27997' id='answer-label-27997' class='js-answer-label answer label-11'><span class='answer'>The Redundant Implementation pattern can be applied to Service B, thereby making duplicate deployments of the service available. This way, when one implementation of Service B is too busy, another implementation can be accessed by Service A instead. The Data Model Transformation pattern can be applied to establish a dedicated database that contains an exact copy of the data from shared Database B that is required by Service A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27998' \/><div class='watu-question-choice'><input type='radio' name='answer-7230[]' id='answer-id-27998' class='answer answer-11 php-answer-label answerof-7230' value='27998' \/>&nbsp;<label for='answer-id-27998' id='answer-label-27998' class='php-answer-label answer label-11'><span class='answer'>The Redundant Implementation pattern can be applied to Service B, thereby making duplicate deployments of the service available. This way, when one implementation of Service B is too busy, another implementation can be accessed by Service A instead. The Service Data Replication pattern can be applied to establish a dedicated database that contains a copy of the data from shared Database B that is required by Service A. The replicated database is designed with an optimized data model to improve query execution performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='27999' \/><div class='watu-question-choice'><input type='radio' name='answer-7230[]' id='answer-id-27999' class='answer answer-11 js-answer-label answerof-7230' value='27999' \/>&nbsp;<label for='answer-id-27999' id='answer-label-27999' class='js-answer-label answer label-11'><span class='answer'>The Redundant Implementation pattern can be applied to Service A, thereby making duplicate deployments of the service available. This way, when one implementation of Service A is too busy, another implementation can be accessed by service consumers instead. The Service Statelessness principle can be applied with the help of the State Repository pattern In order to establish a state database that Service A can use to defer state data it may be required to hold for extended periods, thereby improving its availability and scalability.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>This solution addresses both issues with the current service architecture. By applying the Redundant Implementation pattern to Service B, duplicate deployments of the service are made available, ensuring that when one implementation fails, another can be accessed by Service A. Additionally, the Service Data Replication pattern can be applied to establish a dedicated database that contains a copy of the data from shared Database B that is required by Service A. This replicated database is designed with an optimized data model to improve query execution performance, ensuring that queries issued by Service A to the database can complete more quickly, improving the overall stability and reliability of Service A. By applying these patterns, the problems with Service A can be solved without compromising the normalization of the service inventory.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(11,this)' id='btn-11' value='See Answer'  \/><input type='hidden' id='questionType11' value='radio' class=''><\/div><div class='watu-question' id='question-12'><div class='question-content'><p><strong>QUESTION 21<\/strong><br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-fbed5ff3f7ab51736f58d43bbf44d86b.jpg\"\/><br \/>Service A is an entity service that provides a set of generic and reusable service capabilities. In order to carry out the functionality of any one of its service capabilities, Service A is required to compose Service B (1) and Service C (2), and Service A is required to access Database A (3), Database B (4), and Database C (5). These three databases are shared by other applications within the IT enterprise.<br \/>All of service capabilities provided by Service A are synchronous, which means that for each request a service consumer makes, Service A is required to issue a response message after all of the processing has completed.<br \/>Service A is one of many entity services that reside In a highly normalized service Inventory. Because Service A provides agnostic logic, it is heavily reused and is currently part of many service compositions.<br \/>You are told that Service A has recently become unstable and unreliable. The problem has been traced to two issues with the current service architecture. First, Service B, which Is also an entity service, is being increasingly reused and has itself become unstable and unreliable. When Service B fails, the failure is carried over to Service A. Secondly, shared Database B has a complex data model. Some of the queries issued by Service A to shared Database B can take a very long time to complete.<br \/>What steps can be taken to solve these problems without compromising the normalization of the service inventory?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7231' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28000' \/><div class='watu-question-choice'><input type='radio' name='answer-7231[]' id='answer-id-28000' class='answer answer-12 js-answer-label answerof-7231' value='28000' \/>&nbsp;<label for='answer-id-28000' id='answer-label-28000' class='js-answer-label answer label-12'><span class='answer'>The Redundant Implementation pattern can be applied to Service A, thereby making duplicate deployments of the service available. This way, when one implementation of Service A is too busy, another implementation can be accessed by service consumers instead. The Service Data Replicationpattern can be applied to establish a dedicated database that contains an exact copy of the data from shared Database B that is required by Service A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28001' \/><div class='watu-question-choice'><input type='radio' name='answer-7231[]' id='answer-id-28001' class='answer answer-12 js-answer-label answerof-7231' value='28001' \/>&nbsp;<label for='answer-id-28001' id='answer-label-28001' class='js-answer-label answer label-12'><span class='answer'>The Redundant Implementation pattern can be applied to Service B, thereby making duplicate deployments of the service available. This way, when one implementation of Service B is too busy, another implementation can be accessed by Service A instead. The Data Model Transformation pattern can be applied to establish a dedicated database that contains an exact copy of the data from shared Database B that is required by Service A.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28002' \/><div class='watu-question-choice'><input type='radio' name='answer-7231[]' id='answer-id-28002' class='answer answer-12 php-answer-label answerof-7231' value='28002' \/>&nbsp;<label for='answer-id-28002' id='answer-label-28002' class='php-answer-label answer label-12'><span class='answer'>The Redundant Implementation pattern can be applied to Service B, thereby making duplicate deployments of the service available. This way, when one implementation of Service B is too busy, another implementation can be accessed by Service A instead. The Service Data Replication pattern can be applied to establish a dedicated database that contains a copy of the data from shared Database B that is required by Service A. The replicated database is designed with an optimized data model to improve query execution performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28003' \/><div class='watu-question-choice'><input type='radio' name='answer-7231[]' id='answer-id-28003' class='answer answer-12 js-answer-label answerof-7231' value='28003' \/>&nbsp;<label for='answer-id-28003' id='answer-label-28003' class='js-answer-label answer label-12'><span class='answer'>The Redundant Implementation pattern can be applied to Service A, thereby making duplicate deployments of the service available. This way, when one implementation of Service A is too busy, another implementation can be accessed by service consumers instead. The Service Statelessness principle can be applied with the help of the State Repository pattern In order to establish a state database that Service A can use to defer state data it may be required to hold for extended periods, thereby improving its availability and scalability.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Explanation<br\/>This solution addresses both issues with the current service architecture. By applying the Redundant Implementation pattern to Service B, duplicate deployments of the service are made available, ensuring that when one implementation fails, another can be accessed by Service A. Additionally, the Service Data Replication pattern can be applied to establish a dedicated database that contains a copy of the data from shared Database B that is required by Service A. This replicated database is designed with an optimized data model to improve query execution performance, ensuring that queries issued by Service A to the database can complete more quickly, improving the overall stability and reliability of Service A. By applying these patterns, the problems with Service A can be solved without compromising the normalization of the service inventory.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(12,this)' id='btn-12' value='See Answer'  \/><input type='hidden' id='questionType12' value='radio' class=''><\/div><div class='watu-question' id='question-13'><div class='question-content'><p><strong>QUESTION 22<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-524e559b1416fc415cc75222a0baaf32.jpg\"\/><br \/>Service A is a task service that is required to carry out a series of updates to a set of databases in order to complete a task. To perform the database updates. Service A must interact with three other services that each provides standardized data access capabilities.<br \/>Service A sends its first update request message to Service B (1), which then responds with a message containing either a success or failure code (2). Service A then sends its second update request message to Service C (3), which also responds with a message containing either a success or failure code (4). Finally, Service A sends a request message to Service D (5), which responds with its own message containing either a success or failure code (6).<br \/>Services B, C and D are agnostic services that are reused and shared by multiple service consumers. This has caused unacceptable performance degradation for the service consumers of Service A as it is taking too long to complete its overall task. You&#8217;ve been asked to enhance the service composition architecture so that Service A provides consistent and predictable runtime performance. You are furthermore notified that a new type of data will be introduced to all three databases. It is important that this data is exchanged in a standardized manner so that the data model used for the data in inter-service messages is the same.<br \/>What steps can be taken to fulfill these requirements?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7232' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28004' \/><div class='watu-question-choice'><input type='radio' name='answer-7232[]' id='answer-id-28004' class='answer answer-13 js-answer-label answerof-7232' value='28004' \/>&nbsp;<label for='answer-id-28004' id='answer-label-28004' class='js-answer-label answer label-13'><span class='answer'>The Compensating Service Transaction pattern can be applied so that exception logic is executed to notify Service A whenever the data access logic executed by Service B, C, or D takes too long. If the execution time exceeds a predefined limit, then the overall service activity is cancelled and a failure code is returned to Service A. The Schema Centralization pattern is applied to ensure that all services involved in the composition use the same schemas to represented the data consistently.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28005' \/><div class='watu-question-choice'><input type='radio' name='answer-7232[]' id='answer-id-28005' class='answer answer-13 php-answer-label answerof-7232' value='28005' \/>&nbsp;<label for='answer-id-28005' id='answer-label-28005' class='php-answer-label answer label-13'><span class='answer'>The Composition Autonomy pattern can be applied to establish an isolated environment in which redundant implementations of Services B, C and D are accessed only by Service A. The Canonical Schema pattern can be applied to ensure that the new type of data is represented by the same data model, regardless of which service sends or receives a message containing the data.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28006' \/><div class='watu-question-choice'><input type='radio' name='answer-7232[]' id='answer-id-28006' class='answer answer-13 js-answer-label answerof-7232' value='28006' \/>&nbsp;<label for='answer-id-28006' id='answer-label-28006' class='js-answer-label answer label-13'><span class='answer'>The Redundant Implementation pattern is applied to Service A, along with the Service Instance Routing pattern. This allows for multiple instances of Service A to be created across multiple physical implementations, thereby increasing scalability and availability. The Dual Protocols pattern is applied to all services to support proprietary and standardized data models.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28007' \/><div class='watu-question-choice'><input type='radio' name='answer-7232[]' id='answer-id-28007' class='answer answer-13 js-answer-label answerof-7232' value='28007' \/>&nbsp;<label for='answer-id-28007' id='answer-label-28007' class='js-answer-label answer label-13'><span class='answer'>The Service Fagade pattern is applied to all services in order to create an intermediary processing layer within each service architecture. The Content Negotiation pattern is applied so that each service fagade component within each service architecture is equipped with the logic required to defer request messages to other service instances when concurrent usage of the service is high, and to further apply the conversation logic necessary to convert proprietary data from a database into the standardized XML schema format.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>This approach isolates the services used by Service A, allowing it to avoid the performance degradation caused by multiple service consumers. By creating redundant implementations of Services B, C, and D that are accessed only by Service A, the Composition Autonomy pattern also ensures that Service A&#8217;s runtime performance is consistent and predictable. Applying the Canonical Schema pattern ensures that the new type of data is exchanged in a standardized manner, ensuring consistent representation of the data model used for the data in inter-service messages.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(13,this)' id='btn-13' value='See Answer'  \/><input type='hidden' id='questionType13' value='radio' class=''><\/div><div class='watu-question' id='question-14'><div class='question-content'><p><strong>QUESTION 23<\/strong><br \/>Refer to Exhibit.<br \/><img decoding=\"async\" src=\"https:\/\/exam.real4prep.com\/wp-content\/uploads\/2023\/09\/S90.08B-b6da7fbe731f4c56485f853553d7386d.jpg\"\/><br \/>Service Consumer A sends a message to Service A. There are currently three duplicate implementations of Service A (Implementation 1, Implementation 2 and Implementation 3). The message sent by Service Consumer A is intercepted by Service Agent A (1), which determines at runtime which implementation of Service A to forward the message to. All three implementations of Service A reside on the same physical server.<br \/>You are told that despite the fact that duplicate implementations of Service A exist, performance is still poor at times. You are also informed that a new service capability will soon need to be added to Service A to introduce functionality that will require access to a shared database being used by many other clients and applications in the IT enterprise. This is expected to add further performance demands on Service A.<br \/>How can this service architecture be changed to improve performance in preparation for the addition of the new service capability?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='7233' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28008' \/><div class='watu-question-choice'><input type='radio' name='answer-7233[]' id='answer-id-28008' class='answer answer-14 js-answer-label answerof-7233' value='28008' \/>&nbsp;<label for='answer-id-28008' id='answer-label-28008' class='js-answer-label answer label-14'><span class='answer'>The Standardized Service Contract principle can be applied to ensure that the new service capability extends the existing service contract in a manner that is compliant with current design standards. The Redundant Implementation pattern can be applied to establish separate implementations of Service A that include duplicate databases with copies of the data that Service A requires from the shared database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28009' \/><div class='watu-question-choice'><input type='radio' name='answer-7233[]' id='answer-id-28009' class='answer answer-14 php-answer-label answerof-7233' value='28009' \/>&nbsp;<label for='answer-id-28009' id='answer-label-28009' class='php-answer-label answer label-14'><span class='answer'>The Service Autonomy principle can be applied to further isolate the individual implementations of Service A by separating them onto different physical servers. When the new service capability is added, the Service Data Replication pattern can be applied to give each implementation of Service A its own copy of the data it requires from the shared database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28010' \/><div class='watu-question-choice'><input type='radio' name='answer-7233[]' id='answer-id-28010' class='answer answer-14 js-answer-label answerof-7233' value='28010' \/>&nbsp;<label for='answer-id-28010' id='answer-label-28010' class='js-answer-label answer label-14'><span class='answer'>The Service Loose Coupling principle can be applied together with the Standardized Service Contract principle to ensure that Service Consumer A is not indirectly coupled to the shared database after the new service capability is added to the service contract. The Legacy Wrapper pattern can be applied to establish a new utility service that will provide standardized data access service capabilities for the shared database.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='28011' \/><div class='watu-question-choice'><input type='radio' name='answer-7233[]' id='answer-id-28011' class='answer answer-14 js-answer-label answerof-7233' value='28011' \/>&nbsp;<label for='answer-id-28011' id='answer-label-28011' class='js-answer-label answer label-14'><span class='answer'>The Service Autonomy principle can be applied to further isolate the individual implementations of Service A by separating them onto different physical servers. When the new service capability is added, the State Repository pattern can be applied to give each implementation of Service A its own copy of the data it requires from the shared database.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>By separating the individual implementations of Service A onto different physical servers, they can be isolated from each other and from other clients and applications in the IT enterprise, which can help improve performance. Additionally, using the Service Data Replication pattern to give each implementation of Service A its own copy of the data it requires from the shared database can help reduce the load on the shared database and improve performance. 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