TestOut LabSim A+ Certification Practice Exam

What is one way to protect a wireless network from unauthorized access?

1. Enable WEP encryption

2. Configure the AP to filter out unauthorized MAC addresses

3. Reduce the signal strength

4. Change the SSID monthly

The correct answer is: Configure the AP to filter out unauthorized MAC addresses

Configuring the access point (AP) to filter out unauthorized MAC addresses effectively adds a layer of security to a wireless network. Each device that connects to a network has a unique Media Access Control (MAC) address. By creating a list of known, authorized MAC addresses, the network administrator can control which devices are allowed to connect to the network. When a device attempts to join the network, the AP checks its MAC address against the list. If it is not on the approved list, the connection is denied. This method helps to prevent unauthorized devices from gaining access to the network, as only recognized MAC addresses will be permitted. It’s important to note, however, that this method is not foolproof, as MAC addresses can be spoofed. Still, it significantly enhances security when combined with other protective measures, such as stronger encryption and secure passwords.