Multiple choice

In the ________ random access method(s), there is no collision.

  1. ALOHA

  2. CSMA/CD

  3. CSMA/CA

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) prevents collisions through deliberate mechanisms. Unlike ALOHA (which has high collision rates) or CSMA/CD (which detects collisions after they occur), CSMA/CA uses Request to Send/Clear to Send (RTS/CTS) handshaking to reserve the channel and avoid collisions entirely.

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