The Domain Name System (DNS) is a distributed naming system for computers, services, or any resources connected to the Internet or private network. DNS translates easy-to-remember domain names to IP addresses, allowing browsers and applications to locate internet resources. It works by mapping domain names to IP addresses through a hierarchical system and stores information in DNS records distributed across servers worldwide.

1. Domain Name System

2. What is DNS?

3. DNS is the distributed
naming system for
computers, services or any
resources connected to
the Internet or a private
network

4. 192.248.56.21

6. www.jfn.ac.lk

8. How it
works?
Source: http://computer.howstuffworks.com/dns.htm

9. Source: http://computer.howstuffworks.com/dns.htm

10. Source: http://en.wikipedia.org/wiki/File:An_example_of_theoretical_DNS_recursion.svg

11. DNS RECORDS

12. This record return
32bit ipV4
Address

13. This record return
128bit ipV6
Address

14. Alias of one name
to another
CNAME

15. Map a domain to a list of
massage transfer agents for
that domain

16. Connecting to the
DNS zone

17. Questions