Nokia 4A0-112 Nokia IS-IS Routing Protocol Exam Exam Practice Test Questions

• Question 1

  A routing domain uses a link-state routing protocol. Which of the following would NOT be anadvantage of dividing the entire routing domain into areas?

  • Detailed topology information is only shared among routers within the same area, thus reducing the complexity of the SPF calculation.
  • Route tables can be reduced by summarizing the IP prefixes advertised between areas.
  • Less-capable routers can be isolated from having to keep track of IP prefixes that are external to the local routing domain.
  • Fewer routers are required to handle the same amount of traffic, as compared to a single-area domain.

  Show Answer Answer: D Next

• Question 2

  For a link-state routing protocol, which of the following statements about link-state updates is FALSE?

  • When a link-state update reaches its maximum age on a router, the router will flood that update to its neighbors.
  • When a router detects that a link-state update has reached its maximum age, it will request a new update from the source router.
  • Aging helps ensure that routers that are no longer part of the topology will eventually get removed from the link-state database.
  • The age value is updated as the link-state update is flooded throughout the network and when it is in the link-state database

  Show Answer Answer: A Next

• Question 3

  A routing domain is using a single-area link-state routing protocol. Which of the following is NOT information that a router can share with other routers in the domain using protocol-specific messages?

  • The IP prefixes of subnets directly attached to the router.
  • IP prefixes known by the router because it is running ad additional routing protocol.
  • A copy of the local routing table.
  • The local router ID and the router IDs of neighboring routers.

  Show Answer Answer: C Next

• Question 4

  When a router performs the SPF calculation, which router is used as the root of the shortest path tree?

  • The router with the fewest links.
  • The router with the lowest router ID.
  • The router's closest neighbor.
  • The router doing the calculation.

  Show Answer Answer: D Next

• Question 5

  Which of the following is NOT a function of the control plane a router?

  • To exchange signaling messages with other routers.
  • To determine the best way to forward packets.
  • To establish routing paths to deliver packets from source to destination and to reestablish them in case of failure.
  • To utilize the forwarding tables to forward data packets towards their destination.

  Show Answer Answer: D Next