The GATE Grind

GATE 2021 CS – Question 18

Computer Networks · Data Link Layer: Error Detection, Medium Access Control, Flow Control · 1 mark · Multiple choice

Consider the following two statements.
$S_1$: Destination MAC address of an ARP reply is a broadcast address.
$S_2$: Destination MAC address of an ARP request is a broadcast address.
Which one of the following choices is correct?

  1. Both $S_1$ and $S_2$ are true.
  2. $S_1$ is true and $S_2$ is false.
  3. $S_1$ is false and $S_2$ is true.
  4. Both $S_1$ and $S_2$ are false.

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Show answer and explanation

Correct answer: (C) $S_1$ is false and $S_2$ is true.

Explanation

An ARP request is broadcast (FF:FF:FF:FF:FF:FF). The ARP reply is unicast to the requester.