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Nokia 4A0-116 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Differences between segment routing and other traditional MPLS label signaling protocols
  • MPLS data encapsulation and forwarding
Topic 2
  • Steering traffic into flex-algo segment routing tunnels
  • Advertisement of flex-algo information by IS-IS
Topic 3
  • Topology-Independent Loop-Free Alternate (TI-LFA) paths
  • Remote Loop-Free Alternate (R-LFA) paths
Topic 4
  • Link-state routing protocol extensions to support traffic engineering
  • Configuring OSPF to advertise TE information
Topic 5
  • Link-state routing protocol extensions to support segment routing
  • Configuring OSPF to support segment routing
Topic 6
  • Configuring segment routing LSPs calculated by the PCE
  • SR-TE with a path computation element
Topic 7
  • Configuring segment routing LSPs with traffic engineering constraints
  • Configuring IS-IS to advertise TE information
Topic 8
  • Using segment routing tunnels that follow the IGP shortest path
  • Basic segment routing configuration and operation

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Nokia Segment Routing Exam Sample Questions (Q29-Q34):

NEW QUESTION # 29
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?
4A0-116-ffd217488256644304f7c1edaedb789c.jpg

  • A. It selects an immediate neighbor.
  • B. It selects a remote router, reachable through a tunnel defined by a Node-SID and one or two Adjacency-SIDs.
  • C. 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.
  • D. It selects a remote router, reachable through a tunnel defined by a single Node-SID.

Answer: C

Explanation:
R-LFA (Remote Loop-Free Alternate) is a method that can select either an immediate neighbor or a remote router to be used as a backup next hop, as long as the backup path coincides with the path that will become active after IGP reconvergence.


NEW QUESTION # 30
In which of the following aspects does the configuration of flex-algo LSPs have an advantage over the configuration of SR-TE LSPs?

  • A. List of traffic-engineering constraint types available to choose from
  • B. Flexibility of configuring each LSP with its own set of traffic-engineering constraints
  • C. Label stack size of the encapsulated data packets
  • D. Ability to associate one primary and up to two secondary paths to the same LSP

Answer: B

Explanation:
Flex-Algo LSPs are a type of LSP that allows for greater flexibility in configuring traffic engineering constraints. This is because flex-algo LSPs can be configured with a unique set of traffic engineering constraints for each LSP, whereas SR-TE LSPs use a predefined set of traffic engineering constraints that applies to all LSPs.
Label stack size of the encapsulated data packets, List of traffic-engineering constraint types available to choose from, and Ability to associate one primary and up to two secondary paths to the same LSP are not the advantages of flex-algo LSPs over SR-TE LSPs.


NEW QUESTION # 31
Based on the configuration shown for routers R1 and R10, what valid flex-algo definitions exist in the network?
4A0-116-bd6c2d23aa5ff0591b8162e6561852c5.jpg

  • A. One valid flex-algo definition, using te-metric as the link metric and including blue links.
  • B. No valid flex-algo definitions, because of the conflicting parameters.
  • C. One valid flex-algo definition, using delay as the link metric and including green links.
  • D. 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.

Answer: D


NEW QUESTION # 32
Examine the exhibit.
4A0-116-6630d0f194923b0ad693581b4f84c1eb.jpg
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?

  • A. R1, R3, R5, R6
  • B. R1, R2, R4, R6
  • C. R1, R5, R6
  • D. R1, R6

Answer: A


NEW QUESTION # 33
Which of the following statements about segment routing fast re-route is FALSE?

  • A. Fast re-route is a temporary fix that becomes active for a short period of time after a local network failure.
  • B. On a Nokia 7750 SR, R-LFA and TI-LFA can be enabled independently of each other.
  • C. Fast re-route typically protects the active segment of a tunnel, but under certain conditions it can protect an end-to-end multi-segment tunnel instead.
  • D. The parameter "max-sr-frr-labels" limits the number of labels that R-LFA can add to the data packet encapsulation.

Answer: B

Explanation:
On a Nokia 7750 SR, R-LFA and TI-LFA cannot be enabled independently; they must be enabled together. The parameter "max-sr-frr-labels" limits the number of labels that R-LFA can add to the data packet encapsulation.


NEW QUESTION # 34
......

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