What might be causing the ping to fail?

Refer to the exhibit.

A static route has been configured on router R1 to reach the PC at 139.120.121.2.

What might be causing the ping to fail?
A . Router R2 needs a static route to the PC.
B . Router R1 needs a static route to router R2.
C . The configured next hop does not belong to a subnet adjacent to R1.
D . The configured static route needs to be a default route.

View Answer

Answer: C

Explanation:

In the configuration on router R1, the static route is defined with the next-hop IP address of 139.120.121.1.

However, the next-hop IP address 139.120.121.1 does not belong to the same subnet as the directly connected interface on R1, which is 172.31.1.1/30. For the static route to work properly, the next-hop IP address must be reachable via a directly connected interface, meaning it must be within the same subnet.

Therefore, this mismatch in subnet adjacency is likely causing the failure to reach the destination (139.120.121.2).