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Nokia Segment Routing Exam Sample Questions (Q19-Q24):
NEW QUESTION # 19
Which of the following steps is NOT required when configuring IS-IS to support Segment Routing?
- A. The Segment Routing Global Block range.
- B. The flooding scope of Segment Routing information.
- C. MPLS label range reserved for Segment Routing.
- D. Enable interfaces used for Segment Routing under
Answer: D
Explanation:
Enable interfaces used for Segment Routing under: This step is not required, enabling interfaces used for Segment Routing is not necessary as the IS-IS protocol already takes care of the flooding of the routing information.
NEW QUESTION # 20
Which of the following statements about a Segment Routing SID is FALSE?
- A. A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index.
- B. All routers do NOT need to have the same SRGB range configured.
- C. A local Node-SID can be configured directly as an MPLS label.
- D. A local Node-SID can be configured as an index.
Answer: A
Explanation:
A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index: This statement is not true, A router will advertise its local Node-SID as a local SRGB and an index, whether it is configured as an index or not.
NEW QUESTION # 21
Which of the following is NOT a valid option to steer traffic into a flex-algo segment-routing tunnel?
- A. 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.
- B. 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.
- C. 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.
- D. 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.
Answer: B
Explanation:
Applying a VSI import policy to an EVPN service and enabling the sr-is-is or sr-ospf tunnel type for the service is not a valid option for steering traffic into a flex-algo segment-routing tunnel, VSI is not related to flex-algo SR.
NEW QUESTION # 22
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?
- A. The TE information will only be advertised for the OSPF links that have both MPLS and RSVP enabled.
- B. The TE information will only be advertised using extended-link opaque LSAs.
- C. The TE information will only be advertised using application-specific sub-TLVs.
- D. The TE information will be advertised for all the OSPF links that have MPLS enabled.
Answer: B
Explanation:
When using Segment Routing with Traffic Engineering (SR-TE) in OSPF, the TE information is advertised using extended-link opaque LSAs. The option "sr-te false" indicates that OSPF will not advertise the TE information in the OSPF database, thus the routers will not be aware of the TE information.
NEW QUESTION # 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?
- A. To reach router R8, which is the tail-end of the LSP.
- B. To reach router R4, which is the tail-end of the active segment.
- C. To reach router R5, which is the shortest way to go back to the original path.
- D. To reach router R2, which is the LSP's intended next-hop.
Answer: C
NEW QUESTION # 24
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