CCNA: Cisco Certified Network Associate — Question 1307

Which set of 2 4 GHz nonoverlapping wireless channels is standard in the United States?

Answer options

• A. channels 1, 6, 11, and 14
• B. channels 2, 7, 9, and 11
• C. channels 2, 7, and 11
• D. channels 1, 6, and 11

Correct answer: D

Explanation

The correct answer is D, as channels 1, 6, and 11 are the only three nonoverlapping channels in the 2.4 GHz band commonly used in the United States. Options A, B, and C include channels that overlap with each other, leading to potential interference and reduced performance.