Your wireless network users are experiencing intermittent connectivity issues. After an initial assessment, you notice that the wireless signal strength is fluctuating significantly. You suspect that an external source of interference is affecting the signal. Which of the following actions is most appropriate to identify the interference source?
Adjust the antenna types and positions to improve reception.
Disable the SSID broadcast to reduce signal visibility.
Change the wireless channel on which the network operates.
Use a WiFi analyzer to scan for unexpected signals.