Designated Intermediate System JN0-352 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the primary purpose of a Complete Sequence Number PDU (CSNP) in IS-IS?

   • ATo request specific missing LSPs from a neighbor
   • BTo advertise the complete list of LSPs in the sender's database
   • CTo establish adjacencies between routers
   • DTo acknowledge receipt of an LSP
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   How does a router detect that the DIS has failed on a broadcast segment?

   • AIt stops receiving hello PDUs from the DIS within the hold time
   • BIt detects a change in the pseudonode LSP sequence number
   • CIt receives a CSNP with an empty database
   • DIt receives a DIS failure notification from the network
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   How does DIS election differ between Level 1 and Level 2 on the same broadcast segment?

   • AOnly Level 1 has a DIS; Level 2 uses a different mechanism
   • BLevel 1 uses priority, Level 2 uses MAC address
   • CLevel 2 always elects the router with the highest system ID
   • DThe election process is identical but performed independently for each level
   Reveal Solution Discussion Select an answer first
5. 14expert · hard

   A network engineer is designing a large broadcast segment with many routers. The engineer is concerned about the scalability of IS-IS on this segment. What is a primary concern related to the DIS and how can it be mitigated?

   • AThe DIS is responsible for sending CSNPs, which can become large and consume bandwidth, which can be mitigated by reducing the CSNP interval.
   • BThe DIS must maintain adjacencies with all routers on the segment, which can be a resource burden, which can be mitigated by using a separate DIS for Level 1 and Level 2.
   • CThe DIS must originate a pseudonode LSP that lists all routers on the segment, which can become large, which can be mitigated by segmenting the network into smaller broadcast domains.
   • DThe DIS becomes a bottleneck for LSP flooding, which can be mitigated by increasing the DIS priority.
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   Which router is responsible for creating and maintaining the pseudonode LSP on a broadcast segment?

   • AThe backup designated router
   • BThe Designated Intermediate System (DIS)
   • CAny router on the segment
   • DThe router with the lowest system ID
   Reveal Solution Discussion Select an answer first