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Here are sample Nokia Segment Routing (4A0-116) Exam questions from real exam. You can get more Nokia Service Routing Architect (4A0-116) Exam premium practice questions at TestInsights.

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Question 1

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?

AEstablishing an IGP adjacency with router R2

BEstablishing IGP adjacencies with routers R1 and R2

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

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

Correct : D

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AEstablishing an IGP adjacency with router R2

BEstablishing IGP adjacencies with routers R1 and R2

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

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

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Question 2

Which of the following types of information is considered by a stateless PCE when it processes a new LSP path calculation request?

AThe IGP link-state database

BThe traffic-engineering database

CThe operational state of existing LSP paths

DThe amount of bandwidth reserved for each of the existing LSP paths

Correct : A

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AThe IGP link-state database

BThe traffic-engineering database

CThe operational state of existing LSP paths

DThe amount of bandwidth reserved for each of the existing LSP paths

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Question 3

Which of the following is NOT an advantage of using a PCE for the computation of TE-constrained LSP paths, as compared to using CSPF locally on the PE router?

AThe ability to create cross-area TE-constrained LSP paths

BThe ability to create LSP paths with bandwidth reservation

CThe ability to create LSPs with primary and secondary paths

DThe ability to ensure that some LSP paths are disjoint

Correct : B

PCE does not have the capability to reserve bandwidth, This is a function of a Resource Reservation Protocol (RSVP) or a Label Distribution Protocol (LDP) and is done locally on the PE.

PCE can have advantages such as:

The ability to create cross-area TE-constrained LSP paths

The ability to create LSPs with primary and secondary paths

The ability to ensure that some LSP paths are disjoint

it can be used to optimize the path computation by centralizing the path calculation and by taking into account a global view of the network.

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AThe ability to create cross-area TE-constrained LSP paths

BThe ability to create LSP paths with bandwidth reservation

CThe ability to create LSPs with primary and secondary paths

DThe ability to ensure that some LSP paths are disjoint

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Question 4

In the context of a network that includes a Path Computation Element (PCE), what is a PCC-initiated LSP?

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

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

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

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

Correct : D

A PCC-initiated LSP is an LSP that is established and controlled by the PCC (Path Computation Client) which is typically a head-end router. The PCC sends LSP setup and teardown requests to the PCE and also reports the existence and state of the LSPs to the PCE. The PCE then uses this information to perform path computation and to monitor the state of the LSPs.

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

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

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

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

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Question 5

Based on the configuration shown for routers R1 and R10, what valid flex-algo definitions exist in the network?

ANo valid flex-algo definitions, because of the conflicting parameters.

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

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

DTwo 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.

Correct : D

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ANo valid flex-algo definitions, because of the conflicting parameters.

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

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

DTwo 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.

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