Free 4A0-113 Exam Braindumps
Nokia OSPF Routing Protocol Questions 16–20 (page: 5)

Updated On: 9-Feb-2026

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In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. How many type 4 LSAs will be present in the network?

  1. One.
  2. One for each of the routers in area 0
  3. One for each of the external routes exported by router R1.
  4. Type 4 LSAs are not generated in this network topology.

Answer(s): D



Which of the following conditions will prevent an OSPF adjacency from reaching the full state? Choose three answers.

  1. MTU mismatch
  2. Incorrect subnet mask
  3. System interface not included in OSPF
  4. Area ID not the same
  5. Different metric set on each end of the link
  6. Router ID not defined

Answer(s): A,B,D



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The following command sequence is executed on router R2:
A: R2# configure router ospf router-id 10.10.10.99
A: R2# configure router router-id 10.10.10.66

On router R1, what router ID appears for router R2 directly after these commands are executed?

  1. 10.10.10.99
  2. 10.10.10.66
  3. 10.10.10.2
  4. 10.10.10.1

Answer(s): C



In an OSPF Hello packet, which of the following fields must match for all neighbor routers on the segment? Choose three answers.

  1. Area ID W B.
  2. Hello and Dead intervals PC.
  3. Stub flag
  4. Checksum values
  5. The list of neighbors

Answer(s): A,B,C



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The OSPF adjacency between routers R3 and R1 is down. What is the problem?

  1. Area 1 of router R1 should not be configured as a stub.
  2. Router R3 has the incorrect authentication key type.
  3. Router R1 has the incorrect authentication key type.
  4. There is not enough information to tell.

Answer(s): C



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