Final answer:
A web server is a computer connected to the Internet with software that allows it to host all the components of a website. It receives requests from clients and delivers the web pages and files requested by those clients.
Step-by-step explanation:
A web server is a computer connected to the Internet with software that allows it to host all the components of a website. It receives requests from clients (such as web browsers) and delivers the web pages and files requested by those clients. Think of it as the 'backend' of a website that stores and delivers the content to be displayed on the 'frontend' of the website, which is what users see in their web browsers.