[Music] Web pages are stored on web servers. Each web server has an IP address. It's much easier to remember a catchy domain name like CS noobs than an IP address. So, we need something to match domain names and IPs. The domain name system DNS uses servers to match domain names to IP addresses so that web browsers can locate, request, and access web pages. The DNS process starts when a domain name or URL such as csnneoos.com is typed into the address bar of a web browser. A request is sent to the local DNS server for the corresponding IP address of a domain name. The server has a list of domain names and their matching IP addresses. The DNS server checks if it holds an IP address corresponding to that domain name. If it does, it passes the IP address to the web browser. The browser connects to the IP address of a web server storing the web page to access and display it. There is a hierarchy of DNS servers. If an IP match is not found on the local server, the request is passed on to higher level servers. If it is found, it's passed down to lower servers and then returned. No match, such as a spelling mistake, will result in a DNS error.