Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 833

What is a characteristic of Wi-Fi channels?

Answer options

• A. The 2.4-GHz band has 24 non-overlapping channels.
• B. Devices that connect to the same Wi-Fi channel reside in the same collision domain.
• C. Wi-Fi channels are spaced 30 MHz apart.
• D. The 5-GHz band offers 11 different channels for Wi-Fi clients.

Correct answer: B

Explanation

The correct answer is B because devices on the same Wi-Fi channel share the same collision domain, meaning they can interfere with each other’s transmissions. Option A is incorrect as the 2.4-GHz band has only 3 non-overlapping channels. Option C is also wrong since Wi-Fi channels are typically spaced 20 MHz apart in 2.4 GHz. Lastly, option D is incorrect as the 5-GHz band offers more than 11 channels depending on the regulations.