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Designing Cisco Enterprise Networks (ENSLD) Questions 81–85 (page: 18)

Updated On: 10-Feb-2026

Which control-plane protocol is used to map an endpoint to a location in a Cisco SD-Access network?

  1. FabricPath
  2. IS-IS
  3. LISP
  4. MP-BGP

Answer(s): C



Which feature is required for graceful restart to recover from a processor failure?

  1. Cisco Express Forwarding
  2. Virtual Switch System
  3. Stateful Switchover
  4. Bidirectional Forwarding Detection

Answer(s): C



An architect is designing a network that will utilize the spanning tree protocol to ensure a loop-free topology. The network will support an engineering environment where it is necessary for end-users to connect their own network switches for testing purposes. Which feature should the architect include in the design to ensure the spanning-tree topology is not affected by these rogue switches?

  1. BPDU Skew Detection
  2. BPDU guard
  3. loop guard
  4. root guard

Answer(s): D



An engineer is designing a Layer 3 campus network running EIGRP between the core, aggregation, and access layers. The access layer switches will be connected to the aggregation layer using Layer 3 copper connections. The engineer wants to improve the convergence time for access layer switch failures. Which technique must the design include?

  1. enabling BFD for EIGRP on the access layer uplinks B.
    reducing the EIGRP Hello / Hold timer values
  2. EIGRP summarization from core to aggregation layer D.
    EIGRP summarization from access to aggregation layer

Answer(s): A



An existing network solution is using BFD in echo mode. Several network devices are experiencing high CPU utilization, which an engineer has determined is related to the BFD feature. Which solution should the engineer leverage to reduce the CPU load?

  1. Implement slow timers between peers with low CPU resources.
  2. Implement BFD asynchronous mode between peers with low CPU resources.
  3. Enable BFD multi-hop on the devices with low CPU resources.
  4. Utilize carrier delay on all routers in the network.

Answer(s): A



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