What Are Two Reasons a Network Administrator Would Use CDP

Multiple Choice

What are two reasons a network administrator would use CDP? (Choose two.)

A) to verify the type of cable interconnecting two devices
B) to determine the status of network services on a remote device
C) to obtain VLAN information from directly connected switches
D) to verify Layer 2 connectivity between two devices when Layer 3 fails
E) to obtain the IP address of a connected device in order to telnet to the device
F) to determine the status of the routing protocols between directly connected routers