Question 1

Which of the following is NOT a valid option to steer traffic into a flex-algo segment-routing tunnel?

Options :

A : 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.

B : 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.

C : 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.

D : 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.

Answer: D

Question 2

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

Options :

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

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

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

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

Answer: A

Question 3

Which of the following list of SR-TE attributes has to be advertised among routers?

Options :

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

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

C : 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.

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

Answer: A

Question 4

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?

Options :

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

B : The ability to create LSP paths with bandwidth reservation

C : The ability to create LSPs with primary and secondary paths

D : The ability to ensure that some LSP paths are disjoint

Answer: B

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