Designated Intermediate System JN0-352 Practice Questions (Page 4)

Questions 16–17

1. 16application · medium

   The DIS on a broadcast IS-IS segment experiences a hardware failure and stops sending IS-IS PDUs. What is the immediate impact on the other routers on the segment, and what process is triggered?

   • AThe other routers detect the loss of the DIS through the expiration of the holding timer and immediately elect a new DIS, which then originates a new pseudonode LSP.
   • BThe other routers immediately elect a new DIS, but the new DIS continues to use the old pseudonode LSP to avoid disruption.
   • CThe other routers continue to operate normally because the DIS is not required for forwarding, and no re-election occurs until the DIS is manually reconfigured.
   • DThe other routers stop sending IS-IS PDUs and wait for the DIS to recover, as the DIS is the only router allowed to initiate communication on the segment.
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2. 17foundation · easy

   When a router receives a CSNP and notices it is missing an LSP, what does it send to request that LSP?

   • AA Partial Sequence Number PDU (PSNP)
   • BA hello PDU
   • CA new CSNP
   • DAn LSP with a new sequence number
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