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DATA TRANSFER ON THE INTERNET
When we try to send a file over the internet, it’s not physically transferred, in fact each information or message follows
proper method as given below:
• The data to be transmitted between sender and receiver is broken down into smaller pieces of the same size, called
packets. These packets then travel across the network.
• Each packet has a header, content and a footer. The header contains the address of the packet before it or the
destination address if it is the first packet of the information. The footer has the address of the next packet or if it is
the last packet then end of file information.
• All the packets made from the same data do not follow the same path. If the network has heavy data transfer, then
the packets may follow different route. It means they follow the best suitable route in the network for efficient and
error free data transfer.
• Packets may travel from one machine to another in a network until it reaches its destination.
• At the destination computer all the packets are reassembled based on the information given as header and footer on
each packet. If a packet is damaged or lost on its way, then the information is given to the source computer to resend
the packet. The data is recreated from all the packets received just like a puzzle and delivered to the destination
computer. This whole process of data transfer takes a fraction of seconds to deliver from source to destination.
STEPS TO CHECK FOR ACTIVE INTERNET CONNECTION
Whenever you subscribe for an internet connection through any ISPs then they give you an option of either purchasing
or renting a Wi-Fi router. This Wi-Fi router works both as a connecting and a Wi-Fi access point of the internet. The
Internet Service Provider company will send a technical person to set up a Wi-Fi router and connect to the main
network. After the settings are done any device at home or in the office is then ready to connect to the internet.
If you are using your computer with Windows 10 then you can view the list of wireless networks available by using the
following steps:
Step 1: Click on the wireless icon present on the right side of the system tray. List of
the possible Wi-Fi connections around your location will be listed.
Step 2: Select the desired wifi connection to connect the device to the wifi hotspot.
Step 3: It will ask for the password for the first time if the network is secure. Give the
correct password and you will receive a confirmation that you are connected
to a wireless network.
Step 4: If you select the option Connect automatically then every time you switch on the
computer then it will automatically be connected to the Wi-Fi hotspot. Now your
device is ready to browse the information on the internet.
CONCEPT OF INSTANT MESSAGING (IM)
The Internet has given us easier and cheaper ways to be in touch with our people through email and instant messaging.
Instant Messaging is one of the most popular services on the internet. It uses Instant message applications to provide
an instant way to send and receive messages just like a real time conversation between two or more people.
Both the sender and the receiver have to be online connected through an internet at the same time using the same
Instant Messaging Application in order to have one to one private chat. You can also have audio or video chat. In
that case your device should have microphones, headsets or speakers and web cameras. Nowadays some instant
messaging applications allow users to view messages even in their offline mode. These are called “Offline Messages”.
On the other hand, email helps you deliver messages to multiple people at the same time irrespective they are online
or offline. It is delivered in their mailbox which they can check whenever they want.
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