What address is a feasible successor?

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Refer to the exhibit.

What address is a feasible successor?
A . 172.16.4.0
B . 10.1.4.4
C . 10.1.2.2
D . 172.16.3.0

Answer: C

Explanation:

The feasible condition states:

“To qualify as a feasible successor, a router must have an AD less than the FD of the current successor route”.

In this case, we see 10.1.2.2 shows an AD less than the current successor of 10.1.4.4