What technology extends a private network across the Internet to allow secure data transmission?

A Virtual Private Network (VPN) is a technology that securely extends a private network across the public Internet. It allows users to send and receive data as if their devices were directly connected to a private network, thereby maintaining the confidentiality and integrity of the data being transmitted. By creating a secure tunnel through encryption, a VPN protects sensitive information from potential eavesdroppers and cyber threats that can be prevalent on unsecured networks.

VPNs are essential for remote access to resources, ensuring that data can be transmitted securely over the internet, regardless of the physical location of the user. This technology is widely used for protecting personal privacy, securing communication for employees working remotely, and ensuring safe connections when using public Wi-Fi networks.

Understanding how VPNs function reinforces knowledge of secure communications in various networking scenarios and highlights their significance in safeguarding data during transmission.