80 Domain Name System Slideshare In This Year

Each node in the tree has a domain name.

Domain name system slideshare. The domain name system dns is the phonebook of the internet. Short for domain name system dns is an internet service that translates domain names to ip addresses domain names are alphabetic and therefore easy to remember but the internet is based on numeric ip addresses so a dns server is required for computers to communicate with one another. The ohio state university raj jain 24 15 name resolution cont each computer has a name resolver routine e g gethostbyname in unix each resolver knows the name of a local dns server resolver sends a dns request to the server dns server either gives the answer forwards the request to another server or gives a referral referral next server to whom request should be sent.

Web browsers interact through internet protocol ip addresses. Introduction the internet model that follow the client server paradigm. Dns translates domain names to ip addresses so browsers can load internet resources.

Generic domain country domain inverse domain. Domain name system definition the dns translates internet domain and host names to ip addresses. Domain name system presentation 1.

Addresses are used to locate objects names are easier to remember than numbers you would like to get to the address or other objects using a name dns provides a mapping from names to resources of several types 2. Design principle of dns the naming system on which dns is based is a hierarchical and logical tree structure called the domain namespace. Domain names comprise a hierarchy so that names are unique yet easy to remember.

However the ip protocol needs the ip address. Defines a hierarchical namespace where each. Some of them are generic such as com edu gov net etc while some country level domain names such as au in za.

Domain name is a symbolic string associated with an ip address. There are several domain names available. Dns automatically converts the names we type in our web browser address bar to the ip addresses of web servers hosting those sites.