Which of the following would Pete, a security administrator, do to limit a wireless signal from penetrating the exterior walls?

TKIP is a deprecated encryption protocol for WPA and secures data in transit but has no effect on the physical propagation or direction of the wireless signal.

By strategically positioning and orienting antennas - and by choosing directional antennas over omnidirectional ones where appropriate - an administrator can shape the RF coverage area so it concentrates within the building rather than radiating outward. Placing antennas toward the center of the facility and adjusting power levels limits the signal that bleeds through exterior walls, reducing the risk of eavesdropping from outside the building.

Disabling the SSID broadcast hides the network name from scans but does not change the physical reach or direction of the RF signal through walls.

Disabling WPA removes wireless encryption entirely, which would increase security risk rather than control signal propagation.