Which route does R1 select for traffic that is destined to 192 168.16.2?

Refer to the exhibit.

Which route does R1 select for traffic that is destined to 192 168.16.2?
A . 192.168.16.0/21
B . 192.168.16.0/24
C . 192.168 26.0/26
D . 192.168.16.0/27

View Answer

Answer: D

Explanation:

The destination IP addresses match all four entries in the routing table but the 192.168.16.0/27 has the longest prefix so it will be chosen. This is called the "longest prefix match" rule.