Types of Domain
There are various kinds of domain:
- Generic domains: .com(commercial), .edu(educational), .mil(military), .org(nonprofit organization), .net(similar to commercial) all these are generic domains.
- Country domain: .in (India) .us .uk
- Inverse domain: if we want to know what is the domain name of the website. Ip to domain name mapping. So DNS can provide both the mapping for example to find the IP addresses of w3wiki.org then we have to type
nslookup www.w3wiki.org
Domain Name System (DNS) in Application Layer
Domain Name System (DNS) is a hostname for IP address translation service. DNS is a distributed database implemented in a hierarchy of name servers. It is an application layer protocol for message exchange between clients and servers. It is required for the functioning of the Internet.