Adjacencies and Neighbors JN0-364 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is a key difference between the DIS in IS-IS and the Designated Router (DR) in OSPF?

   • AThe DIS forms adjacencies with all routers, while the DR forms adjacencies only with the BDR.
   • BThe DIS is elected on point-to-point links, while the DR is elected on broadcast links.
   • CThe DIS is elected based on the lowest priority, while the DR is elected based on the highest priority.
   • DThe DIS election is preemptive, while the OSPF DR election is non-preemptive.
   Reveal Solution Discussion Select an answer first
2. 12expert · hard

   A network engineer is troubleshooting an IS-IS adjacency between two routers. The adjacency is Up, but the engineer notices that the neighbor's system ID is not appearing in the IS-IS database. What is the most likely cause of this issue?

   • AThe LSP flooding is being suppressed by the DIS on the broadcast segment.
   • BThe neighbor is not generating an LSP because it has no routes to advertise.
   • CThe neighbor's LSP is being rejected due to an authentication mismatch.
   • DThe neighbor's system ID is not being advertised because the adjacency is only Level 1.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   What is the purpose of the 'holding time' field in an IS-IS Hello (IIH) PDU?

   • AIt specifies the maximum time the router will wait for a Link State PDU before flooding it.
   • BIt specifies the amount of time a neighbor should wait for the next hello before declaring the adjacency down.
   • CIt specifies the time interval between consecutive hello PDUs sent on this interface.
   • DIt specifies the maximum lifetime of the router's own Link State PDUs.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A network has four routers on a broadcast segment. The current DIS is Router A. The network administrator wants to ensure that Router B becomes the DIS to take advantage of its higher processing power. What configuration change will make Router B the DIS?

   • AIncrease the DIS priority on Router B to a value higher than Router A's priority.
   • BChange the system ID of Router B to be numerically lower than Router A's.
   • CDecrease the DIS priority on Router A to the lowest possible value.
   • DConfigure Router B as the DIS manually.
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   What condition causes an IS-IS adjacency to transition from the 'Up' state back to the 'Down' state?

   • AReceiving a hello PDU with a different system ID
   • BThe holding time expiring without receiving a new hello PDU from the neighbor
   • CThe router's own system ID changing
   • DThe router receiving a CSNP from the neighbor
   Reveal Solution Discussion Select an answer first