EIGRP CCIE-ENTERPRISE-INFRASTRUCTURE Practice Questions (Page 3)

Questions 11–15

1. 11expert · hard

   An EIGRP network has a redundant design with multiple paths between sites. The engineer wants to implement route summarization to reduce the size of the routing table and improve convergence. However, the engineer is concerned that summarization may cause suboptimal routing or black holes. What is the best practice to mitigate these risks?

   • AIncrease the variance to allow load balancing across the summary route.
   • BDisable auto-summarization and rely on manual summarization only.
   • CUse a leak-map to selectively advertise more specific routes across the summary boundary.
   • DConfigure all routers as stubs to prevent query propagation.
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A network engineer is troubleshooting a slow convergence issue in an EIGRP network. The network has a hub-and-spoke topology with many remote sites. The engineer suspects that queries are being sent to all remote sites during a route failure, causing delays. The engineer wants to configure the remote site routers as EIGRP stubs, but some remote sites have two connections to the core (dual-homed). What is the correct stub configuration for these dual-homed remote sites?

   • AConfigure them as stubs with the 'leak-map' option to allow selective route advertisement.
   • BConfigure them as stubs with the 'connected' keyword only.
   • CConfigure them as stubs with the 'static' keyword only.
   • DDo not configure them as stubs because dual-homed sites have downstream neighbors.
   Reveal Solution Discussion Select an answer first
4. 13expert · hard

   An engineer is troubleshooting an EIGRP issue where a router is not forming an adjacency with a neighbor. The engineer captures packets and sees that hello packets are being sent and received, but the neighbor remains in the Init state. The engineer also notices that the router is sending update packets, but they are not being acknowledged. What is the most likely cause?

   • AThe MTU on the link is too small, causing update packets to be fragmented and dropped.
   • BThe hello timer is set too high, causing the neighbor to time out.
   • CThe K-values are mismatched, preventing the adjacency from forming.
   • DThe router is configured as a stub, so it does not send updates.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   An engineer is comparing two EIGRP paths to a remote network. Path A has a bandwidth of 100 Mbps and a delay of 1000 microseconds. Path B has a bandwidth of 1 Gbps and a delay of 5000 microseconds. The K-values are the default (K1=1, K3=1, others=0). Which path will be selected as the successor?

   • APath A, because it has a lower composite metric.
   • BThe path with the lower reported distance from the neighbor.
   • CPath B, because it has a higher bandwidth.
   • DBoth paths have the same metric because bandwidth is the same.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   In an EIGRP network, a router loses its successor route to a destination. It has a feasible successor in its topology table. What action does DUAL take?

   • AIt flushes the route from the routing table and re-advertises it as unreachable.
   • BIt immediately promotes the feasible successor to successor and sends an update to neighbors.
   • CIt enters active state and sends queries to all neighbors to find a new path.
   • DIt marks the route as passive and waits for the next hello from the neighbor.
   Reveal Solution Discussion Select an answer first