What are two reasons a network administrator would use CDP? (Choose two.)
A.
to verify the type of cable interconnecting two devices
B.
to verify Layer 2 connectivity between two devices when Layer 3 fails
C.
to determine the status of the routing protocols between directly connected routers
D.
to obtain the IP address of a connected device in order to telnet to the device
E.
to obtain VLAN information from directly connected switches
F.
to determine the status of network services on a remote device
Explanation:
Cisco Discovery Protocol (CDP) is primarily used to obtain protocol addresses of neighboring
devices and discover the platform of those devices. CDP can also be used to show information
about the interfaces your router uses. CDP is media- and protocol-independent, and runs on all
Cisco-manufactured equipment including routers, bridges, access servers, and switches.
CDP runs on all media that support Subnetwork Access Protocol ( SNAP), including local-area
network (LAN), Frame Relay, and Asynchronous Transfer Mode (ATM) physical media. CDP runs
over the data link layer only. Therefore, two systems that support different network-layer protocols
can learn about each other.