Term: "404 Not Found"
Definition
In web communication, "404 Not Found" is an HTTP status code returned by a web server to a client's request indicating that the server cannot locate the requested resource. This can occur due to various reasons such as a mistyped URL, a deleted or moved page, or an error in the server configuration. The server typically provides a standard HTML page with the 404 error message, informing the client that the requested resource could not be found. This status code is part of the HTTP protocol and is used to communicate resource not found errors to clients, helping users and developers identify and resolve issues related to accessing web content.