Cisco 200-105 Exam

An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

Scenario –
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.
Use appropriate show commands to troubleshoot the issues and answer all four questions.

Instructions –
—– Enter Cisco IOS commands on the device to verify network operation and answer the multiple-choice questions.
—– THIS TASK DOES NOT REQUIRE DEVICE CONFIGURATION.
—– Click on the device to gain access to the console of the device. No console or enable passwords are required.
—– To access the multiple-choice questions, click on the numbered boxes on the left of the top panel.
—– There are four multiple-choice questions with this task. Be sure to answer all four questions before clicking the Next button.An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

  • A. There is an area ID mismatch.
  • B. There is a PPP authentication issue; a password mismatch.
  • C. There is an OSPF hello and dead interval mismatch.
  • D. There is a missing network command in the OSPF process on R5.
Answer: Option C.
Explanation: 

The “show ip ospf interface command on R3 and R5 shows that the hello and dead intervals do not match. They are 50 and 200 on R3 and 10 and 40 on R5.

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