CompTIA Network+ (N10-008) — Question 873

A network engineer is installing APs for a SOHO where every staff member uses a cordless phone. Which of the following standards would work best to reduce interference?

Answer options

• A. 802.11a
• B. 802.11b
• C. 802.11g
• D. 802.1X

Correct answer: A

Explanation

The 802.11a standard operates in the 5 GHz frequency band, which is less crowded and experiences less interference from cordless phones that typically operate at 2.4 GHz. In contrast, 802.11b and 802.11g operate in the same 2.4 GHz band, making them more susceptible to interference from the cordless phones. 802.1X is not a wireless standard but rather a network access control protocol, thus irrelevant in this context.