COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What frequency does 802.11a operate at?

2.4GHz
5GHz
2.4GHz and 5GHz
2.4 or 5GHz

The correct answer is: 5GHz

802.11a operates at a single frequency of 5GHz. This differs from 802.11b, which operates at 2.4GHz, and 802.11g, which operates at both 2.4GHz and 5GHz. Therefore, option A is incorrect because 2.4GHz is the frequency for 802.11b and g, not a. Option C is incorrect because it states both 2.4GHz and 5GHz, but a operates only at 5GHz. Option D is incorrect because it is not specific to a single frequency, as 802.11a only operates at 5GHz.