What is the most common Cisco Discovery Protocol version 1 attack?

A.
Denial of Service

B.
MAC-address spoofing

C.
CAM-table overflow

D.
VLAN hopping

Explanation:
BD
CDP contains information about the network device, such as the software version, IP address, platform,
capabilities, and the native VLAN. When this information is available to an attacker computer, the attacker from
that computer can use it to find exploits to attack your network, usually in the form of a Denial of Service (DoS)
attack.
Source: https://howdoesinternetwork.com/2011/cdp-attack