What is a key feature of a VPN?

A key feature of a VPN, or Virtual Private Network, is that it encrypts data for secure transmission. This encryption process transforms readable data into a coded format, making it unintelligible to anyone who might intercept it during transit. This is critical for maintaining privacy and security, especially when using public networks, as it protects sensitive information from unauthorized access and potential cyber threats.

Without encryption, data packets sent over the internet can be easily captured and read by malicious actors. By using a VPN, users can ensure their online activities, such as browsing and file transfers, remain confidential and secure.

Other features mentioned, like providing a physical connection, are not characteristic of a VPN, as VPNs are designed to operate over existing internet infrastructure rather than requiring a dedicated physical medium. Restricting internet access does not align with the purpose of a VPN, which aims to provide more secure and private internet access. Additionally, improving connection speed is not an inherent function of a VPN; in fact, it may sometimes result in slower speeds due to the overhead of encryption and routing through the VPN server. Thus, the encryption feature is paramount to what a VPN offers.