Domains and sub domains, Computer Networking

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Hosts are generally, individual machines at a specific location. Normally Resources of host machine are shared and can be used by any user on Internet. Hosts & local networks are grouped together in domains, which are grouped together then into one larger domain. For an analogy a host computer is refer as an apartment building in a housing complex and your account is only an apartment in it.

Domain might be an apartment complex, a town or even a country. Sub-domains might correspond to organizations like expertsmind.

"IN" Computers known as name servers have database of Internets host addresses. They translate word addresses or persons understandable in numeric equivalent.

Let us see another instance of Internet address:

https://www.xyz.in

What does it all mean? In fact, to the ISP server, very little. The server wished to see something quite distinct. It wants to view a 32-bit number as an Internet address. Something likes this equivalent decimal grouping:

198.168.45.249

The Internet addresses which is known as universal resources locators (URL), are translated from one form to the other via an address resolution protocol. The primary address is in the form we are most utilized to and that user employs to access an Internet site. In this instance, the address is for a website, recognized through the hypertext transfer protocol (http) that controls access to web pages. This http is a delimiter sequence,://, & identification for the world wide web (www).

The domain name, xyz follows www and recognizes the general site for the web.(dot) is one example of a domain top that is a broad classification of web users. Other common domain tops are following:

.com for commerce & businesses

.gov for government agencies

.mil for military sites

.org for all kinds of organizations.

Finally, in this instance is a country code, again preceded through a dot.

Addresses may be followed through sub domains separated through dots or slashes (/) as required. These addresses are translated into a 32-bit (4 decimal numeric groups) address illustrated as for https:// www xyz. in we will further discuss this topic in the next section.


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