Which prefix does Router 1 use for traffic to Host A?

Refer to the exhibit.

Which prefix does Router 1 use for traffic to Host A?
A . 10.10.10.0/28
B . 10.10.13.0/25
C . 10.10.13.144/28
D . 10.10.13.208/29

View Answer

Answer: D

Explanation:

Host A address fall within the address range. However, if more than one route to the same subnet exist (router will use the longest stick match, which match more specific route to the subnet). If there are route 10.10.13.192/26 and 10.10.13.208/29, the router will forward the packet to /29 rather than /28.