Which of the following status codes indicates a "File Not Found" error?

A status code of 404 indicates a "File Not Found" error in the context of web servers and HTTP responses. This code signifies that the server could not find the requested resource. It is a common response when a user tries to access a URL that points to a non-existent page or file on the server.

Understanding other status codes is essential for context. A status code of 200 means that the request was successful and the server returned the requested data. A status code of 500 indicates an internal server error, which suggests something went wrong on the server-side that prevented it from fulfilling the request. Lastly, a status code of 301 denotes a permanent redirect, which signals that the requested resource has been moved to a different URL. Each of these codes serves a specific purpose in communicating status information between the server and client, with the 404 code specifically designed to inform users when a file or resource cannot be found.