The IT department has installed new wireless access points but discovers that the signal extends far into the parking lot. Which of the following actions should be taken to correct this?

Disabling SSID broadcasting hides the network name from casual discovery but does not reduce the physical radio frequency signal range, so the RF signal still reaches the parking lot and remains detectable.

Removing MAC filtering would weaken rather than improve security and has no effect on signal range or coverage area.

Implementing WEP encryption addresses data confidentiality in transit but does not reduce signal range; additionally, WEP is a deprecated and cryptographically broken protocol that should not be used.

Wireless access points allow administrators to adjust transmit power levels, which directly controls how far the radio frequency signal propagates. Lowering power to cover only office areas eliminates excess signal in the parking lot, reducing the wireless attack surface accessible to external threat actors. This is the recommended practice in wireless site surveys and physical RF security hardening.