Which command will show the operational mode of only Fa0/3?

A. Switch#show interfaces
B. Switch#show interfaces switchport
C. Switch#show interfaces FastEthernet 0/3 switchport
D. Switch#show interfaces status | i 0/3

C. The command show interfaces FastEthernet 0/3 switchport will show the switchport details for only Fa0/3, to include its operational mode. This command is similar to show interfaces switchport, which will show all ports.