CCNA: Cisco Certified Network Associate — Question 244

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

Answer options

• 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

Correct answer: D, E

Explanation

Option D is correct because CDP can be used to verify Layer 2 connectivity even when Layer 3 protocols are not operational. Option E is also correct as CDP provides the IP address of directly connected devices, enabling telnet access. The other options do not pertain to CDP's primary functions, which focus on discovering and managing directly connected devices.