What is a VPN and how does it enhance security?

A Virtual Private Network (VPN) enhances security by creating a secure and encrypted connection between the user’s device and the internet, often referred to as a "tunnel". This encryption process protects data from being intercepted or accessed by unauthorized parties while traveling across public or unsecured networks. When users connect to the internet through a VPN, their real IP addresses are masked, providing anonymity and further protecting their identity and data from potential attackers.

By encrypting the data transmitted over the internet, a VPN not only safeguards sensitive information, such as passwords, emails, and personal data, but also allows users to securely access resources remotely. This is particularly important for businesses that need to provide employees with secure access to corporate networks when working offsite.

Other options, while related to network security and performance, do not accurately describe how a VPN operates or its primary function in enhancing security. There are other technologies for data compression and network monitoring or filtering; however, they do not involve the encryption and secure tunneling aspects that define VPN functionality.