2023 Updated Nokia 4A0-116 Dumps PDF - Want To Pass 4A0-116 Fast [Q17-Q41]

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2023 Updated Nokia 4A0-116 Dumps PDF – Want To Pass 4A0-116 Fast

4A0-116 Practice Exam Dumps – 99% Marks In Nokia Exam

Nokia 4A0-116 Exam Syllabus Topics:

Topic	Details
Topic 1	Using segment routing tunnels with TE constraints (SR-TE) Label stack reduction for CSPF-calculated paths
Topic 2	Local calculation of a TE-constrained LSP path Secondary LSP paths and seamless-BFD Ensuring LSP path diversity
Topic 3	Precedence of the different LFA options Enabling segment routing fast re-route Path Computation Element Protocol (PCEP)
Topic 4	Topology-Independent Loop-Free Alternate (TI-LFA) paths Remote Loop-Free Alternate (R-LFA) paths
Topic 5	Configuring segment routing LSPs calculated by the PCE SR-TE with a path computation element
Topic 6	Advertisement of flex-algo information by OSPF Flexible algorithm configuration Flexible algorithm basics
Topic 7	Differences between segment routing and other traditional MPLS label signaling protocols MPLS data encapsulation and forwarding

NO.17 Based on the configuration shown for routers R1 and R10, what valid flex-algo definitions exist in the network?

No valid flex-algo definitions, because of the conflicting parameters.

One valid flex-algo definition, using delay as the link metric and including green links.

One valid flex-algo definition, using te-metric as the link metric and including blue links.

Two valid flex-algo definitions, one uses te-metric as the link metric and includes blue links and the other uses delay as the link met includes green links.

NO.18 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.

NO.19 Examine the exhibit. Based upon the configuration, which routers will the LSP go through?

R1, R3, R2, R5, R4 and R6

R1, R2, R5 and R6

R1, R3, R4 and R6

R1, R2, R4 and R6

NO.20 Which of the following statements about the operation of seamless-BFD is FALSE?

Seamless-BFD responses are sent back using the LSP label stack.

To be able to respond to seamless-BFD messages, a router must be configured as a reflector.

A seamless-BFD template needs to be configured on the head-end of the LSP.

The routing protocol (OSPF or IS-IS) is used to carry the reflector discriminator information.

NO.21 Which of the following list of SR-TE attributes has to be advertised among routers?

Administrative groups that each link belongs to, TE metric of links, bandwidth availability of each link, SRLG that each link belongs to.

Administrative groups that each link belongs to, TE metric of links, SRLG that each link belongs to.

Administrative groups that each link belongs to, TE metric of links, bandwidth availability of each link, SRLG that each link belongs to, link status up/down.

Administrative groups that each link belongs to, TE metric of links, SRLG that each link belongs to, link status up/down.

NO.22 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.

NO.23 The exhibit presents packets being transmitted inside an LSP’s multi-segment primary path going from router R1 to router R8. The LSP also has a standby secondary path, and Seamless-BFD has been enabled on the primary path. The link between routers R1 and R2 fails, and fast re-route (FRR) is triggered. As a result, router R1 forwards the packets to router R3 and adds the proper FRR encapsulation to reach which router?

To reach router R2, which is the LSP’s intended next-hop.

To reach router R5, which is the shortest way to go back to the original path.

To reach router R4, which is the tail-end of the active segment.

To reach router R8, which is the tail-end of the LSP.

NO.24 Which of the following steps is NOT required when configuring IS-IS to support Segment Routing?

MPLS label range reserved for Segment Routing.

Enable interfaces used for Segment Routing under

The flooding scope of Segment Routing information.

The Segment Routing Global Block range.

NO.25 The exhibit shows the fast re-route configuration on router R1, in which both R-LFA and TI-LFA have been enabled. Assume that there are multiple potential backup paths for a given prefix. Which of the following options will router R1 use?

A standard LFA path that would not coincide with the path after IGP re-convergence.

An R-LFA path that would not coincide with the path after IGP re-convergence.

A D-LFA path that would not coincide with the path after IGP re-convergence.

A D-LFA path that would coincide with the path after IGP re-convergence.

NO.26 In the context of a network that includes a Path Computation Element (PCE), what is a PCC-initiated LSP?

An LSP that needs to be explicitly configured on the head-end router.

An LSP for which the initial path is calculated by the head-end router.

An LSP for which the path repairs and re-optimizations must be triggered by the head-end router.

An LSP whose existence and state are reported to the PCE.

NO.27 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.

NO.28 Based on the exhibit, and given that the system IP address of router RIO is 10.10.10.10, which of the following statements is FALSE?

Router Rl participates in at least two flex-algo instances.

Router RIO participates in flex-algo instance 130.

The Node-SID assigned to router RIO for flex-algo instance 129 is 524338.

The underlying routing protocol being used in the network for segment routing is IS-IS.

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.

NO.30 Based on the exhibit, which of the following statements about fast re-route for flex-algo instance 129 is TRUE?

Only standard LFA is enabled on router R1; fast re-route is not enabled on router R2.

Only standard LFA is enabled on both routers R1 and R2.

Standard LFA and remote-LFA are enabled on router R1; fast re-route is not enabled on router R2.

Standard LFA and remote-LFA are enabled on router R1; standard LFA and TT-LFA are enabled on router R2.

NO.31 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.32 For any of the LFA methods to work properly, there must be a router in the backup path that will forward traffic addressed to the destination without sending it back to the source. Which of the following statements describes the way R-LFA selects such a router?

It selects an immediate neighbor.

It selects a remote router, reachable through a tunnel defined by a single Node-SID.

It selects a remote router, reachable through a tunnel defined by a Node-SID and one or two Adjacency-SIDs.

It can select an immediate neighbor or a remote router, as long as the backup path coincides with the path that will become active after IGP reconvergence.

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2023 Updated Nokia 4A0-116 Dumps PDF – Want To Pass 4A0-116 Fast [Q17-Q41]

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