Final answer:
The correct answer is 'Wireless Network Security', which includes measures like implementing directional antennas and adjusting access point power levels to confine the wireless signal and protect the network from unauthorized access.
Step-by-step explanation:
Wireless Network Security
Implementing directional wireless antennas and manipulating access point power levels are measures taken to enhance wireless network security. These techniques are designed to limit the area in which wireless signals propagate, thus reducing the risk of unauthorized access or interception of the signal by malicious individuals. Directional antennas focus the wireless signal in a certain direction rather than all around, thereby limiting the extent to which the signal spreads beyond the intended coverage area. Similarly, adjusting the power levels of an access point can minimize the range of the wireless signal, again preventing it from emanating beyond what is necessary for legitimate use. These security practices guard against attempts to tap into the wireless network and are vital in protecting the integrity and confidentiality of transmitted data.
These measures are not related to Radio Frequency Identification (RFID), which involves tags that emit a signal in response to a microwave signal, nor to Biometric Authentication, which relies on physical or behavioral traits for identification. They are also distinct from an Intrusion Detection System (IDS), which monitors network traffic to detect and alert on malicious activities.