Which of the following is a method to enhance the security of a wireless network?

Enhancing the security of a wireless network is critical, and the chosen method—MAC filtering—plays a significant role in controlling device access. MAC filtering works by allowing only specified devices to connect to the network based on their unique Media Access Control (MAC) address. This creates a significant barrier against unauthorized access because, even if an attacker is aware of the wireless network's SSID and password, their device must be specifically allowed to connect.

While other methods might contribute to overall security, the approach of limiting access through MAC addresses directly targets unauthorized users' ability to connect, thereby enhancing the security posture of the network. However, it’s important to recognize that while MAC filtering can deter casual attempts to join the network, it is not a foolproof method. Attackers can spoof MAC addresses, making it necessary to utilize it in conjunction with other security measures for more robust protection.

SSID visibility may improve awareness of network presence but does not inherently increase security. Changing default passwords is a good security practice for network devices but does not directly impact the wireless network security itself. Using public IP addresses is related to addressing and routing but offers no enhancement to the security of the wireless network.