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Free Cisco® 300-420 Exam Braindumps



Refer to the exhibit. An architect must design a solution to connect the two ASs. To optimize bandwidth, the design will implement load sharing between router R6 and router R1. Which solution should the design include?

  1. Use update-source to specify the Loopback interface.
  2. Use next-hop-self attributes only for routes that are learned from eBGP peers.
  3. Configure the eBGP TTL to support eBGP multihop.
  4. Use maximum-paths to install multiple paths in the routing table.

Answer(s): D



A customer's environment includes hosts that support IPv6-only. Several of these hosts must communicate with a public web server that has only IPv4 domain name resolution. Which solution should the customer use in this environment?

  1. utilize NAT64 to translate the addresses
  2. implement NAT44 at the edge of the customer network
  3. use 6to4 and a tunnel to translate the addresses
  4. implement 6PE to resolve hostname resolution

Answer(s): A



A company is planning to open two new branches and allocate the 2a01:c30:16:7009::3800/118 IPv6 network for the region. Each branch should have the capacity to accommodate a maximum of 200 hosts. Which two networks should the company use? (Choose two.)

  1. 2a01:0c30:0016:7009::3a00/120
  2. 2a01:0c30:0016:7009::3b00/121
  3. 2a01:0c30:0016:7009::3a80/121
  4. 2a01:0c30:0016:7009::3c00/120
  5. 2a01:0c30:0016:7009::3b00/120

Answer(s): A,E



Refer to the exhibit.



A network engineer must improve the current IS-IS environment. The Catalyst switch is equipped with dual supervisors. Each time a stateful switchover occurs, the network experiences unnecessary route recomputation. Which solution addresses this issue if the upstream router does not understand graceful restart messaging?

  1. Enable IS-IS remote LFA FRR on both devices.
  2. Enable NSR on the switch.
  3. Enable NSF on the switch.
  4. Configure ISIS aggressive timers on both devices.

Answer(s): B



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