Refer to the exhibit. Which two statements are true about the loopback address that is configured on RouterB? (Choose two.)

Question:
Refer to the exhibit. Which two statements are true about the loopback address that is configured on RouterB? (Choose two.)

• A. It ensures that data will be forwarded by RouterB.
• B. It provides stability for the OSPF process on RouterB.
• C. It specifies that the router ID for RouterB should be 10.0.0.1.
• D. It decreases the metric for routes that are advertised from RouterB.
• E. It indicates that RouterB should be elected the DR for the LAN.

Explanation: A loopback interface never comes down even if the link is broken so it provides stability for the OSPF process (for example we use that loopback interface as the router-id) - The router-ID is chosen in the order below:
+ The highest IP address assigned to a loopback (logical) interface. + If a loopback interface is not defined, the highest IP address of all active router's physical interfaces will be chosen.
-> The loopback interface will be chosen as the router ID of RouterB ?

Exam with this question: CA201
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