CompTIA Network+ (N10-009) — Question 44

A network administrator is configuring access points for installation in a dense environment where coverage is often overlapping. Which of the following channel widths should the administrator choose to help minimize interference in the 2.4GHz spectrum?

Answer options

• A. 11MHz
• B. 20MHz
• C. 40MHz
• D. 80MHz
• E. 160MHz

Correct answer: B

Explanation

Choosing a 20MHz channel width is ideal in a dense environment because it reduces the potential for interference from overlapping signals. Wider channel widths, like 40MHz, 80MHz, or 160MHz, can exacerbate interference issues in such settings, while 11MHz is not a standard width for 2.4GHz. Therefore, 20MHz is the best compromise between throughput and minimizing interference.