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  3. 300-510 Exam
  4. Cisco.300-510.v2025-11-05.q249 Dumps
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Question 181

Refer to the exhibit. After maintenance to activate BGP neighbors connecting a new data center attached to R1, L3VPN customers attached to OSPF domain 100 lost connectivity to services in OSPF 200 and OSPF 300. However Unified MPLS services within OSPF 100 remain reachable.
Which action must the network engineer take to resolve the outage?

Correct Answer: C
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Question 182

Refer to the exhibit.
The service provider provides IPv6 connectivity to large enterprise customers with offices spanning several geographic regions SRv6 is running in the service provider core The service provider just signed a contract with a new customer that is still running IPv4 The new customer needs connectivity between its two sites connected via CE1 and CE2 and the internet Which action must the service provider s network-engineering team take to provide connectivity across the SRv6 data plane?

Correct Answer: D
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Question 183

Drag and Drop Question
Drag and drop the route-manipulation methods from the left onto their features on the right.

Correct Answer:
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Question 184

A network engineer must implement a segment routing policy rule that specifies that SIDs are bounded manually. The policy will be used for traffic steering based on incoming label traffic with the binding SIDs, adjacency SIDs, and BGP peering SIDs. All labels will be in the local segment with the range from 40000 to 50000. How must the engineer implement dynamic label allocation?

Correct Answer: A
SRLB is the range of segment identifiers (SIDs) allocated locally for specific use cases like binding SIDs, adjacency SIDs, or BGP peering SIDs. By manually bounding the SIDs, the engineer specifies which labels fall within the SRLB range, and this range must be non-default for custom allocations (40000 to 50000 in this case).
The global segment is where both local and globally significant SIDs are defined. Implementing a non-default SRLB range ensures that the specified local labels (40000-50000) are used effectively for steering incoming traffic.
Once the SRLB range is configured in the global segment, dynamic label allocation assigns labels to the binding SIDs, adjacency SIDs, and BGP peering SIDs within the specified range.
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Question 185

Refer to the exhibit. OSPF is an interior routing protocol on the network. R2 is in the backbone area, and R4 is in a totally NSSA area. R5 announces only the 0.0.0.0/0 route to R4 via BGP. R4 is configured with redistribute bgp 736 metric-type 2. After the most recent maintenance window, R2 no longer has the default route via R4. Which action must the network engineer take to correct the reachability problem?

Correct Answer: D
R4 is part of a totally NSSA area (area 2) and receives a default route 0.0.0.0/0 via BGP. OSPF NSSA uses Type 7 LSAs for routes redistributed into the NSSA, which are then translated into Type 5 LSAs at the ABR (R2 in this case).
R2 no longer has the default route because the Type 7 LSA is not being translated into a Type 5 LSA. By default, an ABR translates Type 7 LSAs into Type 5 LSAs, but certain conditions or configurations (e.g., suppress-fa) can prevent this translation. area 2 nssa translate type7 no- suppress-fa ensures that R2 translates the Type 7 LSA (from R4) into a Type 5 LSA. This allows the default route 0.0.0.0/0 to propagate from R4 to R2 and the rest of the OSPF network.
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