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Exam contains 40 questions

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Question 19 🔥

Which of the following statements about path definitions is FALSE?

Which database solution meets these requirements?

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

Highly voted

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

Highly voted

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

Highly voted

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

Highly voted

Discussion of the question

Question 20 🔥

Which of the following is an advantage of enabling label stack reduction for a CSPF-calculated path, as compared to using plain CSPF?

Which database solution meets these requirements?

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

Highly voted

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

Highly voted

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

Highly voted

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

Highly voted

Discussion of the question

Question 21 🔥

Which of the following statements about the operation of seamless-BFD is FALSE?

Which database solution meets these requirements?

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

Highly voted

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

Highly voted

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

Highly voted

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

Highly voted

Discussion of the question

Question 22 🔥

Which of the following statements about primary and secondary SR-TE LSP paths is FALSE?

Which database solution meets these requirements?

A. Only one LSP path forwards the traffic at any time.

Highly voted

B. Up to three paths can be configured for a given SR-TE LSP.

Highly voted

C. The primary path is always preferred over a secondary path.

Highly voted

D. Preference values can be configured for non-standby secondary paths.

Highly voted

Discussion of the question

Question 23 🔥

An SR-TE LSP with a path definition that includes router R4 as a loose hop and for which Seamless-BFD has been enabled is following the path shown in the exhibit. What happens after router R4 fails if the routers along the path follow the default behavior?

Which database solution meets these requirements?

A. The head end will periodically try to calculate a new path at a rate defined by the retry timer.

Highly voted

B. The head end will periodically try to calculate a new path at a rate defined by the resignal timer.

Highly voted

C. The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure.

Highly voted

D. The head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence.

Highly voted

Discussion of the question

Question 24 🔥

Which of the following statements about the Path Computation Element (PCE) is FALSE?

Which database solution meets these requirements?

A. The PCE can obtain topology and traffic-engineering information from the network using either a link-state IGP or BGP-LS.

Highly voted

B. A stateful PCE proactively monitors all the existing LSPs and triggers the necessary repairs and re-optimizations.

Highly voted

C. A stateless PCE can calculate cross-area traffic-engineering-constrained LSP paths.

Highly voted

D. A stateful PCE can allow LSPs to reserve bandwidth.

Highly voted

Discussion of the question

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Exam contains 40 questions

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