Cisco 300-410 Exam Actual Questions
Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) (Page 9 )

Updated On: 23-Jul-2026

Refer to the exhibits. A company with autonomous system number AS65401 has obtained IP address block 209.165.200.224/27 from ARIN. The company needed more IP addresses and was assigned block 209.165.202.128/27 from ISP2. An engineer in ISP1 reports that they are receiving ISP2 routes from AS65401.





Which configuration on R1 resolves the issue?





Answer(s): A



After some changes in the routing policy, it is noticed that the router in AS 45123 is being used as a transit AS router for several service providers.

Which configuration ensures that the branch router in AS 45123 advertises only the local networks to all SP neighbors?





Answer(s): C



A network administrator is troubleshooting a high utilization issue on the route processor of a router that was reported by NMS. The administrator logged into the router to check the control plane policing and observed that the BGP process is dropping a high number of routing packets and causing thousands of routes to recalculate frequently.

Which solution resolves this issue?

  1. Shape the pir for BGP, conform-action set-prec-transmit, and exceed action set-frde-transmit.
  2. Police the pir for BGP, conform-action set-prec-transmit, and exceed action set-clp-transmit.
  3. Shape the cir for BGP, conform-action transmit, and exceed action transmit.
  4. Police the cir for BGP, conform-action transmit, and exceed action transmit.

Answer(s): D


Reference:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_plcshp/configuration/xe-3s/qos-plcshp-xe-3s-book/qos-plcshp-plcr-mact.html



Which mechanism must be chosen to optimize the reconvergence time for OSPF at company location 408817202 that is less CPU-intensive than reducing the hello and dead timers?

  1. sso
  2. BFD
  3. Dead Peer Detection keepalives
  4. OSPF demand circuit

Answer(s): B


Reference:

https://forum.networklessons.com/t/ospf-hello-and-dead-interval/1255



Refer to the exhibit.



An engineer configured BGP between routers R1 and R3. The BGP peers cannot establish neighbor adjacency to be able to exchange routes.

Which configuration resolves this issue?


  1. R1
    routerbgp 6501
    address-family ipv6
    neighbor AB01:2011:7:100::3 activate

  2. R3
    routerbgp 6502
    address-family ipv6
    neighbor AB01:2011:7:100::1 activate

  3. R1
    routerbgp 6501
    neighbor AB01:2011:7:100::3 ebgp-multihop 255

  4. R3
    routerbgp 6502
    neighbor AB01:2011:7:100::1 ebgp-multihop 255

Answer(s): A



Refer to the exhibit.



Which action resolves the adjacency issue?

  1. Configure the same autonomous system numbers.
  2. Match the hello interval timers.
  3. Match the authentication keys.
  4. Configure the same EIGRP process IDs.

Answer(s): A


Reference:

https://www.ciscopress.com/articles/article.asp?p=2999383&seqNum=2



Refer to the exhibit.



BGP and EIGRP are mutually redistributed on R3, and EIGRP and OSPF are mutually redistributed on R1. Users report packet loss and interruption of service to applications hosted on the 10.1.1.0/24 prefix. An engineer tested the link from R3 to R4 with no packet loss present but has noticed frequent routing changes on R3 when running the debug ip route command.

Which action stabilizes the service?

  1. Reduce frequent OSPF SPF calculations on R3 that cause a high CPU and packet loss on traffic traversing R3.
  2. Tag the 10.1.1.0/24 prefix and deny the prefix from being redistributed into OSPF on R1.
  3. Place an OSPF distribute-list outbound on R3 to block the 10.1.1.0/24 prefix from being advertised back to R3.
  4. Repeat the test from R4 using ICMP ping on the local 10.1.1.0/24 prefix, and fix any Layer 2 errors on the host or switch side of the subnet.

Answer(s): B



Refer to the exhibit. An engineer has configured policy-based routing and applied the configuration to the correct interface. How is the configuration applied to the traffic that matches the access list?

  1. It is forwarded using the routing table lookup.
  2. It is sent to 209.165.202.129.
  3. It is dropped.
  4. It is sent to 209.165.202.131.

Answer(s): D

Explanation:

The first next hop IP is down, so the second one will be used.



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