100-150 Question 136
Select 4A user reports being unable to connect to a corporate Wi-Fi network on their Windows laptop. You verify that the SSID is visible but the connection fails repeatedly. Which of the following troubleshooting steps should you perform to resolve the issue?
- A
Ensure the correct SSID and password are entered
- B
Verify that the wireless adapter is set to use the correct WPA authentication mode
- C
Run the 'ping' command to test the connectivity to the router's IP address
- D
Check if the wireless client is configured with a static IP address conflicting with another device
- E
Disable and re-enable the wireless adapter using the Windows Network Settings
Show answer and explanation
Correct answers: A, B, D, E
Explanation
When troubleshooting wireless connectivity issues, it is important to verify the basics first, such as SSID, password, and authentication mode. Checking for static IP conflicts and resetting the wireless adapter are also effective steps. However, running connectivity tests (e.g., 'ping') is only applicable after the device has successfully connected to the network.
- A. Correct.
Ensuring the correct SSID and password are entered is a fundamental step, as incorrect credentials will prevent connection.
- B. Correct.
The corporate Wi-Fi may require a specific WPA authentication mode (e.g., WPA2-Enterprise), and mismatched settings can cause connection failures.
- C. Incorrect.
Running the 'ping' command is not relevant at this stage, as the user is unable to connect to the Wi-Fi network itself, making IP connectivity tests premature.
- D. Correct.
A static IP address conflict can prevent successful connection to the wireless network, so verifying the IP configuration is important.
- E. Correct.
Disabling and re-enabling the wireless adapter can reset the network stack and resolve temporary connectivity issues.