Link-State Database JN0-352 Practice Questions (Page 4)

Questions 16–17

1. 16application · medium

   A network administrator is configuring a new IS-IS router that will be used for traffic monitoring. The router will not be used for transit traffic, but it must participate in the IS-IS routing domain to receive the full link-state database. What configuration should the administrator apply to prevent this router from being used as a transit path while still allowing it to learn the full topology?

   • AConfigure the router as a Level 1-only router so that it does not participate in Level 2 flooding and cannot be used for transit.
   • BSet the overload bit on the router so that other routers will not use it for transit traffic, but it will still receive and process all LSPs.
   • CSet the router's metric to a very high value so that other routers will avoid using it for transit.
   • DDisable LSP flooding on the router's interfaces so that it does not advertise itself as a transit path.
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2. 17application · medium

   An engineer is troubleshooting an IS-IS network where two routers, R1 and R2, are directly connected. R1 has generated a new LSP, but R2 has not yet received it. What mechanism ensures that R2 will eventually receive this LSP?

   • AR2 will detect the missing LSP when it runs SPF and will send a PSNP to R1 to request it.
   • BR1 will wait for R2 to send a hello packet, and then R1 will include the new LSP in the hello packet.
   • CR2 will send a CSNP to R1 requesting all LSPs, and R1 will respond with the new LSP.
   • DR1 will periodically re-flood the LSP until it receives an acknowledgment from R2, either through a PSNP or a CSNP exchange.
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