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101 · Question #654
101 Question #654: Real Exam Question with Answer & Explanation
The correct answer is D: ARP. ARP (Address Resolution Protocol) is the standard protocol used to map an IP address to its corresponding MAC (link layer) address on the same network segment.
Section 1: OSI Model, Network, and Application Delivery Basics
Question
The BIG IP device is connected to the same network as a server. Which communication protocol will the BIG IP device use to discover the link layer address of the server?
Options
- APing
- BICMP
- CRARP
- DARP
Explanation
ARP (Address Resolution Protocol) is the standard protocol used to map an IP address to its corresponding MAC (link layer) address on the same network segment.
Common mistakes.
- A. Ping tests end-to-end IP reachability using ICMP echo messages and cannot resolve or discover link layer addresses.
- B. ICMP is a network-layer protocol used for error reporting and diagnostics - it has no mechanism for resolving IP addresses to MAC addresses.
- C. RARP (Reverse ARP) performs the opposite function - it discovers an IP address from a known MAC address - and is now a deprecated protocol.
Concept tested. ARP for link layer address resolution on LAN
Topics
#ARP#link layer#MAC address#Layer 2
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