World Wide Web
It is a data framework on the internet which enables files to be
connected with different files by hypertext links, allowing the user to search for
data by going from one archive and onto the next. The Hyper-Text Transfer
Protocol (HTTP) is the strategy used to exchange web pages to your PC. With
hypertext, a word or sentence is connected to another web webpage. All web
pages are composed in the hyper-content markup dialect (HTML), which works in
conjunction with HTTP.
Internet
People often mistaken World Wide Web (WWW) with the term internet
which is actually two different things, internet is a global computer network
providing a vast range of information and communication provision, which
includes networks is interrelated using systemize communication protocols. The
internet is a connecting network system across-the-board that uses TCP/IP to
transmit data via various types of media.
How does the
internet works?
It is important to know that every device connected with the internet
has an exceptional IP address. On the off chance that the user connects with
the internet through an Internet Service Provider (ISP), users are normally
doled out an impermanent IP address for the term of their dial-in session. When
a user needs to communicate something specific or recover data from another PC,
the TCP/IP conventions are what make the transmission conceivable. For example,
you open your web program and associate with our web webpage. When this is
being done, your PC sends an electronic request over your internet association
with your internet service provider (ISP).
The ISP routes the request to a server further up the chain on the internet.
Eventually, the request will hit a domain name server (DNS). This server will
look for a match for the domain name you've written in (such as
www.malfz.blogspot.com). If it finds a match, it will direct your request to
the proper server's IP address. However, if there is no match discovered, it
will send the request further to a server that has more information data.
Types of connections
• Dial up which connects to phone line. Dial-up access is cheap but
slow. A modem (internal or external) connects to the Internet after the
computer dials a phone number. This
analog signal is converted to digital via the modem and sent over a land-line
serviced by a public telephone network.
• DSL stands for Digital Subscriber Line. It is an internet connection that is always
“on”. This uses 2 lines so your phone is not tied up when your computer is
connected. There is also no need to dial
a phone number to connect.
• Cable (broadband internet connections) which plugs into phone
line and for TV connections. Cable provides an internet connection through a
cable modem and operates over cable TV lines.
There are different speeds depending on if you are uploading data
transmissions or downloading.
• Wireless or Wi-Fi, as the name suggests, does not use telephone
lines or cables to connect to the internet. Instead, it uses radio
frequency. Wireless is also an always on
connection and it can be accessed from just about anywhere.
• Cellular, commonly 3G & 4G is wireless types connection uses
by smartphones. Cellular technology provides wireless Internet access through
cell phones. The speeds vary depending
on the provider, but the most common are 3G and 4G speeds.
How do we get internet?
The most important equipment needed to set up an internet are
routers, servers, cable, modem, computer etc. and each of it have different
purposes in setting up the internet. Firstly, computer works as an electronic device
that manipulates information. Secondly, cables are wires covered in plastic or
rubber covering that allows the transmission of power or data between devices.
Moreover, server is a computer program or device that provide functionality for
other program or devices. Next is router. It is a hardware device which allows
several computers and other devices connected to a single connection and last
but not least, modem is a device used in the field communication to modulate
and demodulate signals so as to be transmitted over communication channel.
Figure
1: shows how to set up internet
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