Tag: Domain Name System

You can take this quiz online at http://www.net-intro.com/quiz/ What does the Domain Name System accomplish? a) It allows network-connected computers to use a textual name for a computer and look up its IP address b) It keeps track of the GPS coordinates of all servers c) It allows Regional Internet Registries (RIRs) to manage IP…

DNS: Domain Name System. A system of protocols and servers that allow networked applications to look up domain names and retrieve the corresponding IP address for the domain name. domain name: A name that is assigned within a top-level domain. For example, khanacademy.org is a domain that is assigned within the “.org” top-level domain. ICANN:…

While the Domain Name System is not one of our four layers in the model, it is an important part of making the Internet easier to use. Domain names allow end users to use symbolic names for servers instead of numeric Internet Protocol addresses. By adding a service that maps domain names to IP addresses,…

When we look at an IP address like “212.78.1.25”, the left prefix is the “Network Number”, so in a sense we read IP addresses from left to right, where the left part of the IP address is the most general part of the address and right part of the address is most specific: 212.78.1.25 Broad…

If you recall from the previous section, IP addresses are allocated based on where you connect a new network to the Internet. Domain names are allocated based on organizations that “own” the domain name. At the top of the domain name hierarchy is an organization called the International Corporation for Assigned Network Names and Numbers(ICANN).…

The Domain Name System lets you access websites by their domain name like (www.khanacademy.org), so you don’t have to keep a list of numeric Internet Protocol (IP) addresses like “212.78.1.25”. IP address are determined by where your computer connects to the Internet. When you have a portable computer and you move from one location to…