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Designing Cisco Enterprise Networks (ENSLD) Questions 86–90 (page: 19)

Updated On: 10-Feb-2026

How is a sub-second failure of a transport link detected in a Cisco SD-WAN network?

  1. Hellos are sent between the WAN Edge routers and the vSmart controller.
  2. BFD runs on the IPsec tunnels between WAN Edge routers.
  3. BGP is used between WAN Edge routers and the vSmart controller.
  4. Link state change messages are sent between vSmart controllers.

Answer(s): B





Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)

  1. use multiple equal-cost links
  2. use an IGP
  3. use HSRP
  4. use RPVSTP+
  5. use multiple unequal-cost links

Answer(s): A,B



A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:

- reduce the impact of topology changes

- reduce the time spent on network administration

- reduce manual configuration errors

Which two solutions should the architect include in the new design? (Choose two.)

  1. Implement Rapid PVST+ instead of STP.
  2. Implement MST instead of STP.
  3. Use VTP to propagate VLAN information and to prune unused VLANs.
  4. Configure broadcast and multicast storm control on all switches.
  5. Configure dynamic trunking protocol to propagate VLAN information.

Answer(s): A,C



Which component is part of the Cisco SD-Access overlay architecture?

  1. border node
  2. spine node
  3. leaf node
  4. Cisco DNA Center

Answer(s): A



How are wireless endpoints registered in the HTDB in a Cisco SD-Access architecture?

  1. Border nodes first register endpoints and then update the HTDB.
  2. Fabric WLCs update the HTDB as new clients connect to the wireless network.
  3. Fabric APs update the HTDB with the clients' EID and RLO
  4. Fabric edge nodes update the HTDB based on CAPPWAP messaging from the AP.

Answer(s): B


Reference:

https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design- guide.html



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