Wait. What? What does that even mean?
Four binary digits
A single hexadecimal digit can represent four binary digits.
D. A window the rest are incorrect
The show CDP neighbor command operates at the Data link layer (Layer 2)
Cisco Discovery Protocol (CDP) is a proprietary Data Link Layer protocol developed by Cisco Systems. It is used to share information about other directly connected Cisco equipment, such as the operating system version and IP address.
CTRL+P. It's usually pressed when you want to print something.
