The security administrator has noticed cars parking just outside of the building fence line. Which of the following security measures can the administrator use to help protect the company's WiFi…

A honeynet is a security trap designed to lure and monitor attackers, not to prevent the detection of a legitimate wireless network's signal during war driving.

Reducing the beacon rate makes the network less frequently advertised but does not reduce the signal's physical range or prevent its detection by specialized war driving equipment.

Adding false SSIDs is a deception technique to confuse attackers, but it does not diminish the strength or range of the actual WiFi signal that war drivers can detect.

Changing antenna placement, such as moving them inward from external walls or to more central locations, physically contains the wireless signal within the desired perimeter, making it harder for unauthorized individuals outside the building to detect it.

Adjusting power level controls on wireless access points reduces the transmit strength of the signal, thereby shrinking the physical reach of the WiFi network and preventing it from extending beyond the company's premises where war drivers operate.

A warning banner is a legal or procedural control displayed upon connection to a network or system, having no impact on the physical detection of a wireless signal during war driving.