Differences between IP addresses, domain names, DNS, URLs

1.IP Address: The IP address is used to uniquely identify the computer's logical address on the Internet, allowing computers to communicate with each other. Each connected computer relies on IP addresses to differentiate and connect with each other.

2. Domain name: Because the IP address is a digital ID, the use of difficult to remember and write, so on the basis of IP address and developed a symbolic address scheme, to replace the digital IP address. Each symbolic address corresponds to a specific IP address, which makes it much easier to access resources on the network. This character-type address, which corresponds to a digital IP address on the network, is called a domain name.

3.DNS: On the internet between the domain name and IP address is a one-on (or more to a), the domain name, although convenient for people to remember, but the machine can only know each other IP address, the conversion between them is called the domain name resolution, the domain name resolution needs to be done by a dedicated domain name resolution server, DNS is the server for domain name resolution. The final point of the domain name is IP

4. URL: Uniform Resource Locator (URL, abbreviation for English uniformresourcelocator) also known as URL, url format:< protocol >://< domain name or ip>:< port >/< path >

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Multiple domain names can point to the same IP address

A web app can bind multiple domain names, multiple domain names can point to the same Web site (right-click a site in IIS and edit bindings-add)

Differences between IP addresses, domain names, DNS, URLs