ICND1: Interconnecting Cisco Networking Devices Part 1 (CCENT, legacy) — Question 49

A workstation has just resolved a browser URL to the IP address of a server. Which protocol will the workstation now use to determine the destination MAC address to be placed into frames directed toward the sever?

Answer options

• A. ARP
• B. RARP
• C. DNS
• D. DHCP
• E. HTTP

Correct answer: A

Explanation

ARP (Address Resolution Protocol) is responsible for mapping IP addresses to MAC addresses, allowing the workstation to find the MAC address corresponding to the server's IP. RARP (Reverse ARP) is not used in this context, as it is designed to find an IP address from a known MAC address. DNS (Domain Name System) resolves domain names to IP addresses, DHCP (Dynamic Host Configuration Protocol) assigns IP addresses to devices, and HTTP (Hypertext Transfer Protocol) is used for transferring web pages, none of which directly provide MAC address resolution.