WPA2-PSK is a modern and strong way to secure a wireless network using a pre-shared password. This password is used for authentication and data encryption between devices connected to the network. WPA2-PSK offers a higher level of security compared to the previous WPA-PSK standard, which means it is much more difficult for unauthorized people to gain access to your wireless network. This type of security is suitable for home and small business networks, ensuring that your data and connections remain safe from potential threats.