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How to Stop Spyware from Infecting your System
Spyware is becoming more and more of a problem. When I visit a cusomters site and inspect the computers I always find some kind of spyware on the system. I know that many people have been unaware of spyware, but hopefully now that the word is...
Maximizing Email Security ROI: Stop Spam and Save!
This is the first of a five-part series on Maximizing Email Security ROI In the realm of email security threats, the costs of spam are relatively easy to recognize. Although most organizations rarely, if ever, take the time to calculate their...
Protect Your System From the Internet Evils
Ads, Spyware and Popups: the Internet is an aggressively commercial place. Internet marketing is hugely profitable; owners of frequently visited websites can make a reasonable living just off a few banner ads placed on their site. Software was...
Quick Guide To Computer Training
Computers and the Internet have come a long way since their inception. Living in the computer age means adapting to new technologies as they evolve. The ease and speed of communication that computer technology provides allows us to be more...
Webcams: Science-Fiction Becomes Reality
One of the most incredible inventions I’ve ever come across is the web cam and its process of video conferencing. This is just so futuristic I can’t believe they really exist and are readily available to anyone with the Internet, speakers, and...
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Domains: Your Friendly Address on the Internet
Would you believe that there was a time that the internet didn't
have any domain names? During those days the internet was very
much like a telephone network. If you wanted to visit a site,
you would have to type that site IP address. And without domain
names, visiting other websites became a chore.
In the olden days of computing, websites went by their IP
address. So a particular site might be accessed by typing its IP
address on the browser like so: "200.221.0.183" If you miss a
number, and fail to notice it, you could get connected to a
totally different machine.
The beauty of domain names is this: it allows the user to use a
language friendly text address instead of complicated numbers.
This text address is called the domain name. Computers need to
communicate using these numbers.
But these numbers are confusing to humans because we don't talk
that way. A system called the DNS (Domain Name System) takes the
domain name you type in the browser and looks up the
corresponding IP address for that domain name.
Domain names usually have two or more parts, or labels, which
are separated by dots. The rightmost part of the domain name is
the TLD top level domain. This is symbolized by a 3 letter
marker: 'com' for companies, 'net' for networks, 'org' for
organizations, 'edu' for educational institutions, 'mil' for
military, and 'gov' for governments.
Lately there have been additions to the top level domains; the
most notable among them is the 'biz' top level domain. Sometimes
a CLD or country level domain is added further right to the top
level domain. These domains are a two letter representation of
the country the site represents. For example: xxxxx.com.au.
The .com is the top level domain; the .au means that the site
is
Australian. The xxxxx is the domain name, or subdomain name,
depending on whether there are other non-TLD and non-CLD labels
on the domain name.
Domain names do not belong to anyone, except for the NIC or
Network Information Centre. In theory, anyone could use a domain
name. However, you would still have to pay for the handling of
the domain name registration. Domain names are not sold, they
are leased. After the lease is over, other people interested in
that domain name may apply for its lease too.
History
It was the ARPAnet (Advanced Research Projects Agency Network)
that developed the idea of using a more human-legible address
for sites over the internet as opposed to machine IP number.
Originally, each computer on the network would download a file
called hosts.txt. This file would help the computer map domain
names against their actual IP addresses. This system, fact is
still used in network systems such as the Windows OS.
As time passed by, the networking world reached a consensus that
an international organization to maintain and monitor these
maps. In 1983 Paul Mockapetris invented the DNS. This is the
same system we use today.
Domain names have made surfing the World Wide Web easier. It has
been said in many academic circles that the DNS is responsible
for making the internet user-friendly and accessible to
everyone.
This lead to the dramatic explosion in popularity of the
internet. Now everybody can use the internet without having to
be a rocket scientist or a genius.
About the author:
James Monahan is the owner and Senior Editor of TotallyDomain.com and
writes expert articles about domains.
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