[May 02, 2022] ACA-Database Exam Dumps PDF Guaranteed Success with Accurate & Updated Questions [Q35-Q51]

Rate this post

[May 02, 2022] ACA-Database Exam Dumps PDF Guaranteed Success with Accurate & Updated Questions

Pass ACA-Database Exam – Real Test Engine PDF with 82 Questions

QUESTION 35
When high availability switchovers occur in a database, which of the following features provided by ApsaraDB RDS for PostgreSQL can prevent the incremental data loss of logical subscriptions?

Ganos

Pase

Slot failover

High concurrency optimization

Point-in-time restore

QUESTION 36
Your client is having trouble connecting DTS to their source database in their local datacenter, why might this be?

Their database isn’t on Alibaba Cloud already so it cannot be accessed by DTS

Their database is not accessible from the Internet, so DTS cannot access it

Their database must not include the special DTS compatibility mode

Their database is an inverted column store, which is not supported

QUESTION 37
Which of the following statements about the compatibility of AnalyticDB for PostgreSQL is NOT true?

Support for the Java Database Connectivity (JDBC) protocol

Support for the SQL2003 syntax standard

Compliance with PostgreSQL and Greenplum protocols

Fully compatible with Oracle syntax

QUESTION 38
PolarDB for MySQL archive databases use log-structured merge-trees (LSM trees) and the Zstandard (ZSTD) data compression algorithm to increase the data compression ratio. How much storage can be saved, at most?

40%

50%

60%

70%

QUESTION 39
Which of these are NOT good use cases for DTS (Data Transmission Service)? (Number of correct answers: 2)

Incremental synchronization for disaster recovery

Full database synchronization for database migration

Undoing changes made to a database by mistake

Saving database logs

QUESTION 40
Which of the following statements about Alibaba Cloud ApsaraDB for MongoDB is true?

It takes a longer time to perform operations and maintenance (O&M) on ApsaraDB for MongoDB instances than on self-installed and self-managed MongoDB.

DataWorks is not supported for MongoDB data processing.

Alibaba Cloud and MongoDB have a strategic partnership, so Alibaba Cloud Is able to provide the latest MongoDB features in our ApsaraDB for MongoDB product, in all our global regions.

QUESTION 41
Which migration modes are supported by DTS (Data Transmission Service)? (Number of correct answer: 3)

From Alibaba Cloud RDS to other database systems

From RDS to an ECS-based database

From a different cloud provider to Alibaba Cloud

From an RDS database, back to itself

Explanation
For database backup use DBS.
https://www.alibabacloud.com/help/doc-detail/59133.htm?spm=a2c63.l28256.b99.3.467e7530gZ9M6o

QUESTION 42
When a backup file of core sensitive data is downloaded, business systems must be protected against data breaches. Which of the following capabilities must be enabled to ensure data security?

Virtual private cloud (VPC)

Secure Sockets Layer (SSL) encryption

Transparent Data Encryption (TDE)

SOL audit

QUESTION 43
Which of the following are reasonable Data Transmission Service (DTS) use cases? (Number of correct answers: 4)

Database migration without interrupting services / downtime

Geo-disaster recovery and active geo-redundancy for databases

Synchronizing data to data warehouses in real time to build data warehouses for real-time analytics.

Configuring data audit rules to manage data quality.

Synchronizing information about user accounts and permissions.

Change tracking and data distribution.

QUESTION 44
Which of the following are database architectures which have emerged during the evolution of database systems? (Number of correct answers: 3)

Single Instance

Shared Nothing

Shared Everything

Dedicated

QUESTION 45
DTS (Data Transmission Service) must have access to a database user account on both the target and source database, in order to work.

True

False

Explanation
https://www.alibabacloud.com/help/doc-detail/26652.htm?spm=a2c63.p38356.879954.26.2ab232664Wkc2m#co

QUESTION 46
Which of the following computing capabilities are supported by AnalyticDB? (Number of correct answers: 4)

Complex extract, transform, load (ETL)

Interactive analysis

Simple point query

Real-time update

Machine Learning

QUESTION 47
Which of the following are features supported by Alibaba Cloud RDS for MySQL? (The number of

Read-Write Splitting ->
https://www.alibabacloud.com/help/doc-detail/96047.htm?spm=a2c63.p38356.b99.57.500dc3c6Kt0QLs

Local Snapshot Backup-> Snapshot Backup is Cloud disk instance. Cross-region backup is Local disk instance.

Computing nodes and Storage totally seperated-> In the Basic Edition, your database system consists of only one primary RDS instance, and computing is separated from storage. This edition is cost-effective.
https://www.alibabacloud.com/help/doc-detail/48980.html?spm=a2c5t.11065259.1996646101.searchclick

Multi-Zone Deployment ->You can select the Single-zone Deployment or Multi-zone Development method.
https://www.alibabacloud.com/help/doc-detail/26092.htm?spm=a2c63.p38356.b99.18.118b4437l50tDl

ACD

QUESTION 48
Which of the following are the benefits of database views? (Number of correct answers: 3)

Simplicity for queries

Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users

Easier for data visualization

Stabilization of information: presents a consistent, unchanged image of the database structure

QUESTION 49
PolarDB for MySQL uses shared distributed storage and supports dual-zone deployment by default. How many data replicas are available across the two zones?