CompTIA
220-801 · Question #577
220-801 Question #577: Real Exam Question with Answer & Explanation
The correct answer is A: 802.11a. IEEE 802.11a operates exclusively in the 5 GHz frequency band, unlike 802.11b and 802.11g which use 2.4 GHz.
Question
Which of the following wireless protocols c range ONLY?
Options
- A802.11a
- B802.11b
- C802.11g
- D802.11n
Explanation
IEEE 802.11a operates exclusively in the 5 GHz frequency band, unlike 802.11b and 802.11g which use 2.4 GHz.
Common mistakes.
- B. 802.11b operates exclusively at 2.4 GHz, not 5 GHz.
- C. 802.11g also operates at 2.4 GHz and is backward-compatible with 802.11b.
- D. 802.11n is a dual-band standard capable of operating at both 2.4 GHz and 5 GHz simultaneously.
Concept tested. IEEE 802.11a 5 GHz exclusive frequency band
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