Practice Quiz

CompTIA Security+ Exam Prep

Category - Communication

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Which of the following protocols operates on 2.4GHz and has a bandwidth of 1Mbps or 2Mbps?
  1. 802.11g
  2. 802.11a
  3. 802.11b
  4. 802.11
Explanation
Answer: D - 802.11 operates at 2.4GHz and allows for bandwidths of 1Mbps or 2Mbps.

802.11 is the original version of the standard IEEE 802.11. Released in 1997, it specified two net bit rates of 1 or 2 Mbit/s, in addition to a forward error correction code. It specified three alternative physical layer technologies: diffuse infrared operating at 1 Mbit/s, frequency-hopping spread spectrum operating at 1 Mbit/s or 2 Mbit/s, and direct-sequence spread spectrum operating at 1 Mbit/s or 2 Mbit/s. It is almost obsolete now.
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