A network engineer outputs the following information when troubleshooting OSPF protocol faults.

Based on this, determine what causes the adjacency relationship to fail to be established normally?

• A.Area code mismatch
• B.The IP address codes of the interfaces are inconsistent
• C.Process numbers are inconsistent
• D.Router ID conflict

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R1, R2, R3, and R4 run OSPF, and the area ID is as shown in the figure, then () will generate Type-3 LSA.

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The figure shows the VRRP status switchover events. Match these events with their sequence numbers.

Correct Answer:

Explanation:
1 # A Startup message with a priority of 255 is received.
2 # A Startup message with a priority less than 255 is received.
3 # A Shutdown message is received.
4 # The Master_Down timer expires, an Advertisement packet with the priority of 0 is received, or a packet with a priority lower than the local priority is received.
5 # A packet with a priority higher than the local priority is received.
6 # A Shutdown message is received.
# Reference: Huawei HCIA-Datacom Study Guide, VRRP Status Transitions.

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Among the following routing protocols, which one does not belong to ICP?

• A.IS-IS
• B.OSPF
• C.RIP
• D.BGP

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The following figure shows the OSPF network of an enterprise and the OSPF configurations of R1. Which of the following statements is false about the network?

• A.R2 can access the server.
• B.GE 0/0/1 of R1 cannot send OSPF packets.
• C.The network segment to which GE 0/0/1 of R1 belongs cannot be advertised.
• D.GE 0/0/1 of R1 cannot accept OSPF packets.

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