Multiple choice

When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?

  1. The hosts return to a listen-before-transmit mode.

  2. The hosts creating the collision have priority to send data.

  3. The hosts creating the collision retransmit the last 16 frames.

  4. The hosts extend their delay period to allow for rapid transmission.
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A Correct answer
Explanation

After a collision in CSMA/CD, hosts wait for their backoff period to expire. Once the backoff time elapses, they must return to listen-before-transmit mode to check if the channel is idle before attempting retransmission. This prevents immediate re-collision. Hosts do not have priority - they compete fairly for channel access.

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