What is an IP address?

An IP address is a unique string of numbers assigned to each device connected to a network that utilizes the Internet Protocol for communication. This numerical label serves two main functions: it identifies the host or network interface and provides the location of the device within the network. Each IP address is essential for routing data between devices on the network, allowing them to send and receive information effectively.

In the context of networking, the IP address helps ensure that information sent over the internet reaches the correct destination. It acts like a mailing address for devices, enabling the routing of internet traffic. This unique identifier is fundamental to the operation of the internet, technology communication, and data transfer protocols.

The other choices refer to different concepts: a user account identifier pertains to account management, codes for data encryption involve protecting information, and file compression formats relate to reducing file sizes for storage efficiency. These are all distinct from the role and function of an IP address.