Adjacencies and Neighbors JN0-352 Practice Questions (Page 4)

Questions 16–18

1. 16foundation · easy

   What event causes an IS-IS adjacency to transition from the Initializing state to the Up state?

   • AThe router receives a Complete Sequence Number PDU (CSNP) from the neighbor.
   • BThe router's hold timer expires.
   • CThe router sends its first Link State PDU (LSP) to the neighbor.
   • DThe router receives an IIH from the neighbor that contains the router's own system ID.
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   Two Juniper routers are connected via a point-to-point link. Both have IS-IS configured with the same area ID and circuit type. The adjacency is not forming. The engineer checks the interface MTU and finds that it is 1500 on both routers. What is the most likely cause of the adjacency failure?

   • AThe hello interval is different on the two routers.
   • BThe authentication is configured on one router but not the other.
   • CThe system ID is different on the two routers.
   • DThe hold time is different on the two routers.
   Reveal Solution Discussion Select an answer first
3. 18foundation · easy

   In IS-IS, what is the role of a Level 1-2 adjacency?

   • AIt is used only for routing between areas and does not participate in intra-area routing.
   • BIt is a temporary adjacency used only during the initial router boot process before a router decides its final level.
   • CIt is used only for routing within a single area and never carries routing information between areas.
   • DIt is used for both intra-area (Level 1) and inter-area (Level 2) routing, allowing a router to act as a Level 1-2 router.
   Reveal Solution Discussion Select an answer first