CompTIA Network+ (N10-008) — Question 273

A device is connected to a managed Layer 3 network switch. The MAC address of the device is known, but the static IP address assigned to the device is not.
Which of the following features of a Layer 3 network switch should be used to determine the IPv4 address of the device?

Answer options

• A. MAC table
• B. Neighbor Discovery Protocol
• C. ARP table
• D. IPConfig
• E. ACL table

Correct answer: C

Explanation

The correct answer is C, as the ARP table maps IP addresses to MAC addresses, allowing you to find the IPv4 address associated with the known MAC address. The MAC table (A) only provides MAC to port mappings, while Neighbor Discovery Protocol (B) is specific to IPv6. IPConfig (D) is a command used on a device to display its own IP configuration, and ACL table (E) relates to access control lists, not IP address resolution.