100-140 Question 29
Single answerA user reports that their laptop cannot connect to the corporate Wi-Fi network, but other devices in the same area are connecting without any problem. Upon investigation, you confirm that the Wi-Fi network is operational and the user's laptop is detecting the network. What is the most probable cause of the failure?
- A
The laptop's Wi-Fi adapter is disabled.
- B
The corporate Wi-Fi network's SSID has been changed.
- C
The user's laptop is set to airplane mode.
- D
The laptop has an incorrect Wi-Fi password saved.
Show answer and explanation
Correct answer: D
Explanation
The most probable cause of the failure is that the laptop has an incorrect Wi-Fi password saved. The laptop detects the network but cannot connect, which is consistent with incorrect authentication. Other potential causes, such as a disabled Wi-Fi adapter or airplane mode, would prevent the laptop from detecting the network entirely, and changes to the SSID would affect all devices, not just the user's laptop.
- A. Incorrect.
If the Wi-Fi adapter were disabled, the laptop would not detect the network. Since the network is being detected, this is unlikely to be the cause.
- B. Incorrect.
If the SSID had been changed, other devices in the same area would also fail to connect. In this case, other devices are working, so this is not the cause.
- C. Incorrect.
If the laptop were in airplane mode, it would not detect any Wi-Fi networks. Since the laptop is detecting the corporate Wi-Fi network, this is not the issue.
- D. Correct.
An incorrect Wi-Fi password saved on the laptop would cause it to fail to connect to the network despite detecting it. This matches the symptoms described.