What is the primary function of the Internet Protocol (IP)?

The primary function of the Internet Protocol (IP) is routing and addressing data packets. IP is responsible for defining the format of packets, encapsulating the data to be transmitted, and ensuring that they are sent from the source to the correct destination across various networks. It assigns unique addresses to devices on a network, allowing them to be identified and allowing data to be efficiently directed to these addresses in a process known as packet-switching.

This routing capability is essential for the Internet and other networks, ensuring that data can travel across complex paths and reach the intended recipient. The addressing system also allows multiple devices to communicate over the same network without confusion.

Other options, while related to data transmission and networking, do not represent the primary function of the Internet Protocol. Encrypting data pertains to security measures, preventing data loss involves error handling and data integrity measures, and validating user access relates to authentication processes, which are not functions of the IP itself.