Counting the numbers

August 26, 2011



Why are most 802.11b access points configured to use channels 1, 6, or 11, but rarely the channels in-between?

A) The other channels are government-restricted

B) The other channels provide slower bandwidth

C) The other channels are reserved for VoIP communication

D) The other channel frequencies overlap each other

E) The only good shows are on channel 1, 6, and 11.


The answer: D) The other channel frequencies overlap each other

The 2.4 GHz frequencies in 802.11b or 802.11g can be configured to use channels 1 through 14, but the frequency overlaps between the channels would create conflicts if multiple access points are used in close proximity. Channels 1, 6, and 11 are far enough apart from each other that a frequency conflict would never arise.

Want to know more? Watch “Wireless Networks.”

Wireless networking technology has become a normal part of our home and mobile networks. In this video, you’ll learn about 802.11a, 802.11b, 802.11g, 802.11n, and some of the encryption technologies associated with wireless networks.

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Category: CompTIA A+ Pop Quizzes

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