220-1101 Question 32
Single answerWi-FiA technician is troubleshooting Wi-Fi complaints in a small office. Users report that file downloads are slow and video calls frequently stutter, but only in the conference room. The wireless router is located in a storage room on the other side of the office. Using a Wi-Fi analyzer, the technician finds that the 2.4 GHz network in the conference room has a very weak signal and heavy overlap from nearby businesses on channels 1, 6, and 11. The company also has a 5 GHz SSID available, but several users in the conference room cannot see it reliably. Which of the following is the BEST action to improve wireless performance in the conference room?
- A
Move the wireless access point closer to the conference room or add an additional access point to improve coverage
- B
Change the 2.4 GHz channel from 6 to 11 because channel 11 is always faster in office environments
- C
Disable 5 GHz and force all devices to use 2.4 GHz because it travels farther through walls
- D
Increase the screen resolution on user laptops so video conferencing software uses less bandwidth
Show answer and explanation
Correct answer: A
Explanation
This question tests practical Wi-Fi troubleshooting: identifying when the primary issue is coverage rather than just channel selection. In this scenario, the technician has evidence of both weak signal and high 2.4 GHz congestion. Because 5 GHz is also unreliable in the conference room, the most effective corrective action is to improve access point placement or add another access point. This follows standard wireless design best practices: place APs to provide sufficient signal where users actually work, and use additional APs rather than forcing clients onto congested spectrum. Industry guidance from wireless vendors and enterprise WLAN design practices consistently emphasizes site-aware AP placement, adequate coverage, and minimizing dependence on 2.4 GHz where possible due to congestion and limited non-overlapping channels.
- A. Correct.
Correct. The scenario points to a coverage problem first: the conference room has a weak signal from the current access point, and 5 GHz is not reliably visible there. In real deployments, the best fix for poor signal strength in a specific area is to improve access point placement or add another access point to provide better coverage and capacity. This addresses both the weak signal and the inability of some users to consistently connect to 5 GHz.
- B. Incorrect.
Incorrect. On 2.4 GHz, channels 1, 6, and 11 are the standard non-overlapping channels in many regions, but channel 11 is not inherently faster than channel 6. The analyzer already shows heavy overlap on all of those channels from neighboring businesses, so simply switching among them is unlikely to resolve the main issue. The bigger problem is poor signal strength in the conference room.
- C. Incorrect.
Incorrect. While 2.4 GHz generally has better range and wall penetration than 5 GHz, disabling 5 GHz would reduce available bandwidth and push all devices onto an already congested 2.4 GHz band. That would typically worsen performance, especially for video calls and file transfers in a dense office environment.
- D. Incorrect.
Incorrect. Screen resolution settings do not fix a weak Wi-Fi signal or RF interference problem. Although video applications may adapt bitrate based on conditions, changing display resolution is not a proper network-layer solution and would not address the root cause identified by the analyzer.