What is the definition of a client in the context of networked applications?

In the context of networked applications, a client refers to an individual computer or device that connects to a network and makes requests for resources or services from a server. This interaction is fundamental in client-server architecture, where the client initiates communication to access information or services hosted on a server.

When considering how different components in networking operate, the client is typically a user-facing device such as a personal computer, smartphone, or tablet, which utilizes applications to send requests over the network and receive responses. This architecture allows for efficient resource management, as multiple clients can connect to and leverage the same server resources concurrently.

In contrast, the other options relate to distinct concepts in networking and web development but do not define a client. A server is explicitly responsible for providing resources and responding to requests, a text file is more likely to serve as a data storage format rather than defining a network component, and a set of commands for APIs describes interactions with a service rather than identifying a role in client-server dynamics. Thus, the definition of a client is accurately captured by the definition of an individual computer connected to a network.