100-140 Question 189
Select 3A company is experiencing intermittent connectivity issues in their office. The IT support technician is tasked with troubleshooting the network. The office has both wired LAN connections and a WLAN (Wi-Fi) network for users. After investigating, the technician finds that users connected via the wired LAN have stable connections, while users on the WLAN are experiencing slow speeds and dropped connections. What could be the possible reasons for the WLAN issues?
- A
Interference from nearby wireless networks or devices
- B
Faulty Ethernet cables used for wired LAN connections
- C
High number of devices connected to the Wi-Fi access point
- D
Wi-Fi access point placed in a location with physical obstructions
- E
Incorrect IP address configuration on the wired LAN
Show answer and explanation
Correct answers: A, C, D
Explanation
WLAN issues are often caused by factors like interference, overcrowding on a Wi-Fi access point, or poor placement of the access point leading to signal obstructions. In this scenario, the wired LAN is stable, so we can rule out issues related to Ethernet cables or IP address configuration on the wired network. The correct answers highlight typical causes of Wi-Fi performance problems.
- A. Correct.
Interference from nearby wireless networks or devices is a common cause of WLAN performance issues, as Wi-Fi signals can overlap or be disrupted by other devices operating on the same frequency.
- B. Incorrect.
Faulty Ethernet cables would only impact the wired LAN, not the WLAN. Since the issue is isolated to Wi-Fi users, this is not a valid reason.
- C. Correct.
A high number of devices connected to the Wi-Fi access point can lead to congestion and reduced performance for all users on the WLAN.
- D. Correct.
Physical obstructions, such as walls or large objects, can weaken Wi-Fi signals, leading to poor connectivity for users in areas with weak coverage.
- E. Incorrect.
Incorrect IP address configuration on the wired LAN would not directly affect the WLAN performance, as the issue is specific to wireless users.