Cisco devices use a protocol called CDP (Cisco Discovery Protocol) that allows routers to share information about each other. These messages can sometimes be sniffed. What is the destination MAC address for a CDP message?
A) 00-00-00-00-00-00
B) FF-FF-FF-FF-FF-FFF
C) 01-00-0C-CC-CC-CC
D) 01-46-02-7B-45-AD

Question

Quizplus · Accepted Answer

The first byte denotes this as a multicast. Also the character "c" a lot would make that a good guess.

Cisco Devices Use a Protocol Called CDP (Cisco Discovery Protocol)