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Cisco 300-420 Exam Questions
Designing Cisco Enterprise Networks (ENSLD) (Page 7 )

Updated On: 2-Mar-2026
Page 7 of 73
PDF with 386 Questions



Refer to the exhibit. An architect must design a solution to connect the network behind R3 with the EIGRP network. Which mechanism should be included to avoid routing loops?

  1. down bit
  2. split-horizon
  3. route tags
  4. summarization

Answer(s): C



An architect is creating a migration strategy for a large organization in which the choice made by the application between IPv6 and IPv4 is based on the DNS request. Which migration strategy does the architect choose?

  1. AFT for public web presence
  2. host-initiated tunnels
  3. dual-stack
  4. site-to-site IPv6 over IPv4 tunnels

Answer(s): C



An engineer is creating a design to enable IPv6 to run on an existing IPv4 IS-IS network. The IPv4 and IPv6 topologies will match exactly, and the engineer plans to use the same IS-IS router levels for each protocol per interface. Which IS-IS design is required?

  1. multi topology without enabling transition feature
  2. multi topology with transition feature enabled
  3. single topology without enabling transition feature
  4. single topology with transition feature enabled

Answer(s): C



An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area. Which area type does the engineer choose to provide minimal router resource utilization, while still allowing for full connectivity to the rest of the network?

  1. not so stubby
  2. totally not so stubby
  3. totally stubby area
  4. stubby area

Answer(s): C





Refer to the exhibit. An architect is designing a BGP solution to connect a remote branch to a service provider. There are several prefixes within the branch that the company does not want to be advertised to the Internet. Which solution should the architect use to accomplish this?

  1. Attach the No-Export community with the prefixes to exclude.
  2. Use the BGP No-Advertise community for the prefixes to exclude.
  3. Set the BGP Internet community for all prefixes.
  4. Implement the NOPEER community.

Answer(s): A



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