Which multiple access technique is used by IEEE 802.11 standard for wireless LAN?

Subject: Computer Networks

Topic: Wireless LANs Electronic Mail and File Transfer

Options:

1. Option A: CDMA
2. Option B: CSMA/CA
3. Option C: ALOHA
4. Option D: CSMA/CD

Correct Answer:

Option B: CSMA/CA

Explanation:

CSMA/CA stands for Carrier-sense multiple access/collision avoidance. It is a multiple access protocol used by IEEE 802.11 standard for wireless LAN. It’s based on the principle of collision avoidance by using different algorithms to avoid collisions between channels.