Question

Which of the following approaches to wireless LAN (WLAN) security restricts access to a WLAN based on a computer's wireless interface card?

a) WEP (Wired Equivalent Privacy)
b) MAC filtering
c) WPA (Wi-Fi Protected Access)
d) SSID hiding

Answer 1

MAC filtering is an approach to WLAN security that restricts access based on a computer's wireless interface card.

Step-by-step explanation:

The correct answer is b) MAC filtering. MAC filtering is an approach to wireless LAN (WLAN) security that restricts access to a WLAN based on a computer's wireless interface card. It works by allowing or denying access to the network based on the Media Access Control (MAC) address of the wireless card.

MAC addresses are unique identifiers assigned to network interfaces, including wireless cards. By applying MAC filtering, network administrators can create a list of approved MAC addresses that are allowed to connect to the WLAN, and any device with a MAC address not on the list will be denied access.

For example, if a wireless network administrator enables MAC filtering and adds the MAC addresses of specific devices (such as laptops or smartphones) to the approved list, only those devices will be able to connect to the network. Any other devices attempting to connect, even if they know the network's SSID (Service Set Identifier) and passphrase, will be blocked.