Mell What is DNS explain in detail?
Domain Name Server (DNS) is a standard protocol that helps Internet users discover websites using human readable addresses. Without DNS, the Internet would collapse – it would be impossible for people and machines to access Internet servers via the friendly URLs they have come to know.
What are the types of domain name system?
Different types of domain names
- .com: shorthand for commercial, .com was the first top-level domain in common use.
- net: shorthand for network, .
- edu: shorthand for education, .
- org: shorthand for organization, .
- mil: shorthand for military, .
- gov: shorthand for government, .
What is the purpose of DNS server?
DNS translates domain names to IP addresses so browsers can load Internet resources. Each device connected to the Internet has a unique IP address which other machines use to find the device. DNS servers eliminate the need for humans to memorize IP addresses such as 192.168.
What is the use of DNS server?
A DNS server – short for Domain Name System server – converts web addresses into IP addresses. Without a DNS server, you won’t be able to connect to any websites. If you’re having issues with your default DNS server, you can change it.
What are the three domains of DNS?
The domain name space is divided into three different sections: generic domains, country domains, and inverse domain.
How does the Internet Domain Name System work?
Domain Name System helps to resolve the host name to an address. It uses a hierarchical naming scheme and distributed database of IP addresses and associated names IP address is a unique logical address assigned to a machine over the network. An IP address exhibits the following properties:
When did the Domain Name System first emerge?
A Domain Name System (DNS) first emerged in the early 1980s. It represents a system of interconnected servers that store registered domain names and Internet Protocol (IP) addresses. As the Internet grew, it became an unavoidable part of online interaction.
What is the hierarchy of Internet domain names?
The following diagram shows the domain name space hierarchy: In the above diagram each subtree represents a domain. Each domain can be partitioned into sub domains and these can be further partitioned and so on. Name server contains the DNS database. This database comprises of various names and their corresponding IP addresses.
Which is the most widely used Domain Name System?
Then in 1984, BIND (Berkeley Internet Name Domain) was created by four students, Douglas Terry, Mark Painter, David Riggle, and Songnian Zhou, for Unix machines. After some revisions made in 1985 by Kevin Dunlap, it was later ported to Windows machines and is still the most widely used DNS on the planet. How DNS works?