[Dec-2023] Nokia 4A0-116 DUMPS WITH REAL EXAM QUESTIONS [Q21-Q45]

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[Dec-2023] Nokia 4A0-116 DUMPS WITH REAL EXAM QUESTIONS

2023 New Real4Prep 4A0-116 PDF Recently Updated Questions

Nokia 4A0-116 exam, also known as the Nokia Segment Routing exam, is a certification exam that focuses on the Nokia Segment Routing technology. Nokia Segment Routing is a traffic engineering technology that allows network operators to simplify network operations by steering traffic through the network using a label-based routing mechanism. 4A0-116 exam is designed to test the candidate’s knowledge of the Nokia Segment Routing technology and their ability to design, configure, and troubleshoot a network using this technology.

Nokia 4A0-116 certification exam is a challenging exam that requires a comprehensive understanding of Segment Routing and its implementation using Nokia solutions. Candidates who pass 4A0-116 exam can demonstrate their proficiency in Segment Routing and Nokia technologies, which can open doors to new career opportunities and higher salaries.

NO.21 Which of the following statements about a Segment Routing SID is FALSE?

A Node-SID is usually associated with a router’s system interface.

A Prefix-SID can be configured directly as a label value or indirectly as an index.

Adjacency-SID values are taken from the SRGB configured for the routing protocol.

An Adjacency-SID does not have to be configured.

An Adjacency-SID does not have to be configured: this statement is not true, An Adjacency-SID is associated with a neighbor router, it is used to identify an adjacency between two routers. An Adjacency-SID must be configured to identify the adjacency.

NO.22 Based on the exhibit, which of the following is a viable option for the Path Computation Element (PCE) to obtain all the necessary topology and traffic-engineering information from the network, so that it can calculate LSP paths on behalf of the PE routers?

Establishing an IGP adjacency with router R2

Establishing IGP adjacencies with routers R1 and R2

Establishing a BGP session using the BGP-LS address family with router R3

Establishing BGP sessions using the BGP-LS address family with routers R3 and R4

NO.23 Which of the following statements about a Segment Routing SID is FALSE?

A Node-SID is usually associated with a router’s system interface.

Adjacency-SID values are taken from the SRGB configured for the routing protocol.

A Prefix-SID can be configured directly as a label value or indirectly as an index.

An Adjacency-SID does not have to be configured.

NO.24 OSPF is being used for segment routing with traffic-engineering (SR-TE). The traffic-engineering option has been set to “sr-te false”. Which of the following statements is TRUE?

The TE information will be advertised for all the OSPF links that have MPLS enabled.

The TE information will only be advertised using application-specific sub-TLVs.

The TE information will only be advertised for the OSPF links that have both MPLS and RSVP enabled.

The TE information will only be advertised using extended-link opaque LSAs.

When using Segment Routing with Traffic Engineering (SR-TE) in OSPF, the TE information is advertised using extended-link opaque LSAs. The option “sr-te false” indicates that OSPF will not advertise the TE information in the OSPF database, thus the routers will not be aware of the TE information.

NO.25 Which of the following statements about Multi-Protocol Label Switching networks is FALSE?

MPLS uses a signaling protocol to exchange labels between routers.

An LSR forwards data based on the MPLS labels.

An LSP is a bi-directional tunnel that uses MPLS labels to forward data.

The data is transparently carried from end to end.

The data is transparently carried from end to end: This statement is not true, MPLS does not provide data transparency, which means that the data is not carried unmodified from end to end. MPLS uses labels to forward data, so the original IP packets are encapsulated in new MPLS packets, and the original IP headers are not visible at the egress LSR.

NO.26 OSPF type-10 Opaque LSAs can carry different types of advertisements. What type of advertisement carries a router’s local 5RGB information?

Extended Prefix Info

Router Info

Extended Link Info

Traffic Engineering Info

This type of advertisement carries a router’s local SRGB information, which is used to distribute information about the local SID allocation range

NO.27 Which of the following statements about path definitions is FALSE?

Once a path is associated with an LSP, it cannot be used by other LSPs.

A loose hop is one that does not have to be directly adjacent to the previous hop in the path list

The path hops can be defined by either the system or physical interface IP address.

In addition to the hops defined in the path list, the head-end and tail-end routers are implicitly added.

NO.28 Examine the exhibit.

An LSP is being configured to start at R1 and end at R6 using local CSPF. The LSP has the following constraints. Include admin-group GREEN, use the TE metric and hop-limit 3. What routers will be included in the LSP path?

R1, R2, R4, R6

R1, R5, R6

R1, R3, R5, R6

R1, R6

NO.29 Which of the following statements about Segment Routing tunnels is FALSE?

A Segment Routing tunnel defined by a Node-SID uses the shortest IGP Path.

A Segment Routing tunnel can be defined by multiple Node-SIDs.

A Segment Routing tunnel can be defined by a combination of Node-SIDs and Adjacency-SIDs.

For a Segment Routing tunnel, an intermediate router will always forward the packet based on the best IGP path.

an intermediate router in a Segment Routing tunnel may forward packets based on the specific SIDs defined in the Segment Routing tunnel and not always the best IGP path.

NO.30 Which of the following is NOT a valid option to steer traffic into a flex-algo segment-routing tunnel?

Using a flex-algo Node-SID as an explicit hop in the path definition of an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

Specifying the flex-algo instance ID as an additional TE constraint for an SR-TE LSP and enabling the sr-te tunnel type for a VPN service.

Configuring and applying a VRF import policy to a VPRN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

Configuring and applying a VSI import policy to an EVPN service and enabling the sr-is-is or sr-ospf tunnel type for the service, depending on the underlying routing protocol.

Applying a VSI import policy to an EVPN service and enabling the sr-is-is or sr-ospf tunnel type for the service is not a valid option for steering traffic into a flex-algo segment-routing tunnel, VSI is not related to flex-algo SR.

NO.31 Which of the following is an advantage of enabling label stack reduction for a CSPF-calculated path, as compared to using plain CSPF?

The number of hops included in the end-to-end path is reduced.

The path calculation can be delegated to an external path computation element (PCE).

There is a larger list of traffic-engineering constraint types that can be imposed on the LSP path.

The routers in the calculated path can take advantage of ECMP to better distribute the traffic load.

Once a path is associated with an LSP, it cannot be used by other LSPs is False. A path can be used by multiple LSPs, but each LSP can have different attributes like bandwidth, priority and other constraints.

NO.32 To create a flex-algo instance in a network, which of the following configuration steps is mandatory?

Configuring the proper values for the shared-risk link groups (SRLGs) that will define the flex-algo topology.

Configuring at least one router in the network to create and advertise the flex-algo definition.

Specifying whether the LSP paths will be computed locally or by an external path computation element (PCE).

Configuring LSPs between every pair of PE routers.

To create a flex-algo instance in a network, it’s mandatory to configure at least one router in the network to create and advertise the flex-algo definition, This is the first step in creating a flex-algo instance, and it’s done by defining the flex-algo instance and its properties on one or more routers in the network.
The other steps are important to fine-tune the flex-algo instance, but not mandatory to create it.
Configuring the proper values for the shared-risk link groups (SRLGs) that will define the flex-algo topology.
Specifying whether the LSP paths will be computed locally or by an external path computation element (PCE).
Configuring LSPs between every pair of PE routers.

NO.33 Based upon the exhibit, which of the following statements regarding the configuration is FALSE?

Traffic engineering information will only be advertised for the interfaces that have both MPLS and RSVP enabled.

The Node-SID assigned to this router is the second label in the defined range.

Traffic engineering has been enabled on this router.

Adjacency-SID labels will not be advertised as they have not been defined under the physical interfaces.

NO.34 The exhibit highlights in blue the primary path of a segment going from router S to router D.
The exhibit also shows a backup path. The protected link fails and fast re-route is triggered on router S. If the backup path has been calculated using standard LFA, how many SIDs are included in the label stack of the data packet forwarded to router R1?

NO.35 Which of the following statements about a Segment Routing SID is FALSE?

A local Node-SID can be configured directly as an MPLS label.

A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index.

All routers do NOT need to have the same SRGB range configured.

A local Node-SID can be configured as an index.

A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index: This statement is not true, A router will advertise its local Node-SID as a local SRGB and an index, whether it is configured as an index or not.

NO.36 Examine the exhibit. Based upon the configuration, which routers will the LSP go through?