Welcome to Data Flow on the Internet. The Internet is a worldwide collection of computers that are linked together. These
global connections form a common, wide area network also known as the World
Wide Web. This global connection allows you to exchange information with someone down the street or halfway around the world at any time of day, 365 days a year. Let’s look at what happens when you
press the Enter key on your computer and send information out to the World Wide Web. The information you send is broken into
smaller pieces called data packets. This allows people around the world to use
the Internet at the same time. Your information is sent through the Internet
as small data packets and re-assembled at the receiver’s computer. Let’s compare how data flows on the
Internet to how cars travel on streets. The data packets from your computer are
sent to your Internet Service Provider or ISP, which sends them out to the Internet. Just as streets have speed limits for
cars, the speed at which your data packets travel, is dependent on your
Internet connection. High-speed connections like DSL, wireless,
and mobile broadband allow data packets to travel at faster speeds than slower
connections like dial up and older broadband. The speed at which your data packets
travel is also dependent on the size of the data packets. Just like large trucks
take longer to get up to speed and may travel at a slower speed, larger data
packets travel more slowly and take longer to reach their destination. Each data packet contains a piece of your original information, as well as your IP
address and the address for the destination computer. It may also contain a sequence number if
the application you used to send the information is guaranteeing its
delivery. The data packets may also contain other
bits of information needed for controlling and checking their content. Just like cars may use different roads
within a highway network to reach the same destination city, your data packets
may use different routes within the Internet network to reach the same
destination computer. In this example, all of the red cars have
the same IP address. This means the cars have the same origin
and destination. They are however, all traveling on different paths to reach
that destination. The Internet is a series of many
interconnecting networks. To help manage traffic on your local roads, a traffic
cop directs and monitors traffic. The Internet uses a router as its traffic cop.
The router determines the best path for the data packets depending on the speed
and number of other traveling data packets. Internet routers regularly communicate
with each other so they know what routes provide the fastest delivery. These
routes are stored inside the router’s memory and are called routing tables. Just as traffic patterns can vary because of the
amount of traffic, construction, and road conditions, Internet patterns can also vary
depending on the amount, size, and type of data being sent. This means that your data packets may
not always take the same path to reach their destination. In fact, some data packets may arrive out
of sequence, because of delays or they may not arrive at all. If you’ve ever used the Internet to
listen to music or watch a video that cut out or looked pixelated, you’ve
experienced high data traffic. Eventually your data packets will reach the destination
computers ISP. Just as highways have on and off ramps, the local ISP is the
destination computer’s off ramp for your data packets. All ISPs have their own
router that knows the final path to the destination computer. While these routers
do interact with the Internet, their purposes are to know the fastest route
to the customers’ computers and provide an on and off ramp to the Internet. When your data packets arrive at the destination computer, it starts the process of
reassembling the packets. If the packets contain sequence numbers, the computer
assembles them in the correct order and requests the retransmission of any
packets that were lost during the journey. This concludes our journey of data flow over
the Internet. A few key points to remember are: all data is
broken into smaller parts for transmission over the Internet, not all data packets take the same route
between the sending and receiving computers, the application used to send
the information determines if the delivery of the data
packets is guaranteed, the speed at which data packets travel is affected by
Internet traffic. You have completed, Data Flow on the Internet.

Data Flow on the Internet
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5 thoughts on “Data Flow on the Internet

  • March 14, 2017 at 6:58 am

    Basic and understood

  • March 7, 2018 at 6:32 pm


  • March 17, 2018 at 3:33 pm

    i like it

  • July 17, 2019 at 6:41 am

    Can I use this clip and add my voice in it?

  • November 30, 2019 at 1:08 am

    Looks like the guy at 3:26 is masturbating


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