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  1. Home
  2. Cisco Certification
  3. 300-510 Exam
  4. Cisco.300-510.v2025-11-05.q249 Dumps
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Question 71

Refer to the exhibit. Router 1, Router 2, and Router 3 are co-located in an onsite data center of an office, but Router 4, Router 5, and Router 6 are installed in another data center several miles away. A network engineer is troubleshooting an RSVP- issue on the network. On most of the devices, the engineer can move all LSPs away from a selected interface and take it down for maintenance without interrupting traffic. However, when an interface on Router 3 is taken down, traffic on the network is disrupted. What must the engineer enable to resolve the issue on Router
3?

Correct Answer: C
RSVP-TE (Resource Reservation Protocol - Traffic Engineering) is used to establish MPLS Traffic Engineering tunnels. When an interface on Router 3 is taken down, there is traffic disruption because no backup path is immediately available. Other routers are able to redirect traffic without issues, which indicates that Fast Reroute (FRR) is missing on Router 3.
FRR provides a local repair mechanism for MPLS TE tunnels. It allows a router to pre-calculate and pre-establish backup paths (also called detour paths) for primary LSPs. When the primary link or interface fails, traffic is rerouted immediately onto the backup path without significant delay.
By enabling FRR on Router 3, the LSPs will have pre-established backup paths, ensuring that traffic is redirected without disruption during interface maintenance or failure.
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Question 72


Refer to the exhibit. Which effect of this configuration is true?

Correct Answer: A
Explanation
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/command/irg-cr-book/bgp-s1.html#wp1552800140
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Question 73

Refer to the exhibit.

Refer to the exhibit. After a recent network implementation project, customer A is performing stress testing to verify network redundancy at the branch office connected to R4. When the link from R2 is shut oown as shown, the SLA tracking object fails and the cost of the link between R2 and R4 increases to 100. However, a traceroute operation from a PC in the Branch office shows that traffic to HQ is still routed via R2. Which solution corrects the problem and optimizes traffic flow via R3 without creating operational overhead?

Correct Answer: B
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Question 74

Refer to the exhibit.

Routers within the cluster are not receiving the desired prefixes. What must be done to fix the issue?

Correct Answer: B
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Question 75

Refer to the exhibit.

Refer to the exhibit Reuters R2. R3, R4 and R5 all reside in the same area, with R1 in a different area R3 is overutilized and the engineer wants to reduce its CPU load The engineer configured router R4 to summarize routes that it receives from R5. but R3 is still receiving all of the R5 routes. Which action resolves the issue?

Correct Answer: A
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