CDP

Question 1

What does CDP stand for?

Answer 1

Cisco Discovery Protocol.

Question 2

What does CDP display?

Answer 2

Physically-connected devices, including their hostname, device model, management IP, and connecting interfaces.

Question 3

What is the industry-standard version of CDP?

Answer 3

LLDP, the link-layer discovery protocol.

Question 4

Why is CDP a security concern?

Answer 4

It provides detailed network information and sends all information in clear-text.

Question 5

What are the default CPD timers?

Answer 5

A hello timer of 60 seconds and a hold timer of 180 seconds.

Question 6

Can CDP be enabled/disabled globally?

Answer 6

Yes, and it can also be enabled/disabled at the interface level.

Question 7

In addition to device information, what else can CDP detect?

Answer 7

VLAN mismatches, MTU size, and PoE levels.