CCNA Exam Prep Question of the Week

Your router has the following interfaces configured:
Loopback 0: 10.2.2.2/24
Loopback 10: 10.1.1.1/24
FastEthernet 0/0: 172.16.1.1/24
FastEthernet 0/1: 172.16.2.2/24

You configure OSPF. What is the OSPF router ID?

  1. 10.2.2.2
  2. 10.1.1.1
  3. 172.16.1.1
  4. 172.16.2.2
  5. There is not enough information to determine the router ID.

 

The correct answer is 1

If the router ID is not specified with the router-id command and if the router has loopback interfaces with IP addresses when OSPF is configured, the OSPF router ID is the highest such address. Otherwise the router ID is the highest IP address configured on an active interface.

References:
For more questions like these, try our CCNA Cert Check

Related Courses:
ICND1 — Interconnecting Cisco Network Devices 1
ICND2 — Interconnecting Cisco Network Devices 2
CCNAX — CCNA Boot Camp v1.1

In this article

Join the Conversation