A network technician is installing a guest wireless network at a coffee shop, providing the password on the customer's receipt. What will provide the highest level of security with the least overhead?

The option that offers the highest level of security with minimal overhead in this scenario is WPA-PSK (Wi-Fi Protected Access Pre-Shared Key). WPA-PSK is a widely used security protocol for wireless networks that allows for encryption without the complexity of an enterprise-level setup.

In a coffee shop environment, where multiple users need to connect quickly without complicated authentication processes, WPA-PSK strikes a balance between security and usability. It uses a shared key for encryption, which is easier to distribute (as it can be printed on receipts) and does not require additional hardware or complex configuration.

In contrast, WPA-EAP (Extensible Authentication Protocol) is more secure because it allows for individual user authentication and can handle multiple users more effectively. However, it usually requires a RADIUS server and therefore entails more configuration and management overhead, which may not be practical for a coffee shop setting focused on ease of access for customers.

WEP-TKIP (Wired Equivalent Privacy - Temporal Key Integrity Protocol) is outdated and known to have serious security vulnerabilities, making it a poor choice for any network, including a guest network.

WPS-PIN (Wi-Fi Protected Setup) is designed to simplify the connection process, but it has known security flaws that