Domain Name System Hierarchical Structure

It associates various information with domain names assigned to each of the participating entities.

Domain name system hierarchical structure. Every computer a server or client participating in the internet activities providing or receiving services must have a unique ip address. A fqdn is the domain name that specifies its exact location in the dns hierarchy. How do computers connect over the internet. The domain name system dns has a hierarchical inverted tree structure.

The domain name lies at the top of the hierarchy. This is called the domain namespace. The dns namespace tree has a unique root and large number of sub trees. Most prominently it translates more readily memorized domain names to the numerical ip addresses needed for locating and.

Global uniform hierarchical retrieval system domain name system was created in 1985 alongside these numeric addresses so that each ip address could be mapped to a globally unique user friendly domain name 1 ia 03 in technical terms the routing of data to the correct address is still exclusively. Click for larger image. These names are of individual labels which are subsequently divided through dots. 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.

A domain can further divided in to sub domains. In the file system naming is done from the root down but in the domain name system it is done from the bottom to the root. 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. The names in the dns form a hierarchical tree structure.

The dns hierarchical inverted tree structure is called the dns namespace. This is the mcq in domain name system from the book data communications and networking by behrouz a. A fully qualified domain name is unique enough to be easily identified by the host s position in the dns s structure. In the domain name structure computer ip address mappings equivalent to files are placed in domains and these domains can contain other domains sub domains.

Dns stores the database of all the. If a domain name is not found the server may query other domain servers to obtain its address. The root of the structure is a dot. What is the hierarchical structure of dns.

There are millions of websites available on the internet to make finding an address the domain naming is broken into a hierarchical structure. A domain is a subtree of the dns name space. If you are looking for a reviewer in datacom topic in electronics systems and technologies communications engineering this will definitely help you before taking the board exam.