Final answer:
A status code is a three-digit number that provides information about the status of a client's request. 'Pending' is an example of a status code that indicates a request is still in progress.
Step-by-step explanation:
A status code is a three-digit number that is returned by a server in response to a client's request. It provides information about the status of the request. One of the examples of a status code is 'Pending'. When you make a request, and it is being processed or waiting for a response, the server might provide a 'Pending' status code to indicate that the request is still in progress.