20 The Domain Name System Hierarchy New

Eos is the host name.

The domain name system hierarchy. It associates various information with domain names assigned to each of the participating entities. The domain name space refers a hierarchy in the internet naming structure. For example in the figure below edu is the top level domain berkeley is the second level domain and cs is the sub domain of berkeley.

Dns stores the database of all the. Dns stands for domain name system is used to as the medium to translate domain names to their respective ip addresses when a client initiates a request query. Domain names indicate a domain s position in the overall dns namespace much as path names indicate a file s position in the unix file system.

The root is represented by an empty string. The domain name system dns is a hierarchical and decentralized naming system for computers services or other resources connected to the internet or a private network. This hierarchy has multiple levels from 0 to 127 with a root at the top.

After your local domain is registered its name is added to the name of the internet hierarchy to which the domain belongs. Click for larger image. After the root the next layer in the dns hierarchy is called as tlds top level domains.

The following diagram shows the domain name space hierarchy. In the above diagram each subtree represents a domain. Most prominently it translates more readily memorized domain names to the numerical ip addresses needed for locating and.

For example the ajax domain that is shown in figure 3 5 has been registered. A domain is a subtree of the dns name space. A fqdn is the domain name that specifies its exact location in the dns hierarchy.