You type the following command into the router and receive the following output: Router#show serial 0/0 ^ % Invalid input detected at '^' marker. Why was this error message displayed?

You type the following command into the router and receive the following output:

Router#show serial 0/0
        ^
% Invalid input detected at '^' marker.

Why was this error message displayed?

[A].	You need to be in privileged mode.
[B].	You cannot have a space between serial and 0/0.
[C].	The router does not have a serial0/0 interface.
[D].	Part of the command is missing.

Answer: Option D

Explanation:

You can view the interface statistics from user mode, but the command is show interface serial 0/0.