the dynamic user-friendly interface of
the Internet as we know it today is breathed into life by a multi layer
global network system that connects hundreds of millions of computers if you
are watching this video it is because a sophisticated signal transmission system
has been developed and implemented over the years most likely the data in this
video may have traveled thousands of miles before reaching your device in
this video we will try to figure out how does the internet work by explaining
where this data is coming from and which path they need to follow in order to
reach every single user connected to the network the video you are watching now is stored
inside a data center data centers are simply centralized locations that
provide important services such as data storage backup and recovery data
management and networking JAES is constantly engaged in the supply of all the spare parts necessary for the proper functioning of these data centers which
need to be constantly working 24 hours a day a simple way to achieve this data
transfer is to use a geosynchronous satellite in this case an Internet
service provider sends a signal to this satellite via a special antenna and then
from the satellite the signal is sent to our mobile phone with the help of
another antenna near to us however this is not the best method to achieve a good
connection a satellite in fact orbits at a distance of over 22,000 miles above
earth’s equator so the signal will have to travel a total distance of about
44,000 miles this is because the signal is first sent to the satellite and then
from the satellite is sent back to the earth to the right recipient all this
creates latency which is a delay in receiving the signal due to the long
distance the most effective way to transfer the signal is through optical
fiber cables which thanks to a complicated network connect the data
center to our device even our smart phone despite being a mobile device is
indirectly connected to these cables the cellular radio towers in fact are
connected to this optical fiber cables network their antennas receive the
signal from the underground network then the signal is converted into an
electromagnetic wave so as to be picked up by the antennas of our phone as we
mentioned earlier this video you are watching is stored inside a data center
more precisely inside a solid-state device this SSD represents the internal
memory of a server which is basically a more powerful
computer the primary function of this server is to store process and deliver
web content to clients these data are transmitted through the complex network
of optical fiber cables and reach the right recipient thanks to IP addresses
the IP address is a numerical label assigned to each device connected to a
computer network that uses the internet protocol for communication like our home
addresses the IP address allows us to receive the right information to our
device it is the job of our Internet service provider to assign us a unique
IP address which we can also see in its entirety on our laptop or smartphone
even the server in the data center has their own specific IP address in fact
the IP addresses of any website are stored in a server but since it’s not
very convenient for us to remember all these numeric strings many IP addresses
are associated with domains for example or furthermore
many domains cannot be associated with a single server especially giant websites
like YouTube or Instagram that contain a lot of information usually these
companies have their own personal data center we all access information online
through domain names instead of the complex IP address numbers each website
has its own domain but how does the internet track all these names simply
with the help of a huge naming system called DNS namely domain name system
this system is basically the phonebook of the Internet we use a phonebook every
time we don’t remember a certain person’s phone number but we remember
exactly his full name so it will be much easier for us to find his number through
his name than the other way around the DNS system applies the same concept to
the Internet every Internet service provider has access to a DNS server
so to recap when we enter the domain name our browser sends a request to the
DNS server to get the corresponding IP address
after getting the IP address our browser simply forwards the request to the data
center to the respective server once the server gets a request to access a
specific web site that data flow starts the data is transferred in digital
format via optical fiber cables more specifically in the form of light pulses
very often these light pulses have to travel thousands of miles before
reaching their destination and during their journey they often have to go
through tough terrains such as hills mountains or even under the sea for this
reason there are a few global companies dedicated to delivering subsea network
connectivity on a global scale these companies are specialized in submarine
cable installation in the second part of this video we will see how fiber-optic
cables are laid on the seabed and how the data finally reaches our laptop and
smartphone finally if you found this video useful
let us know by leaving a comment and subscribing to our YouTube channel to
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How does the internet work? (PART 1) Data center – IP Address – Optical fiber cables

7 thoughts on “How does the internet work? (PART 1) Data center – IP Address – Optical fiber cables

  • February 7, 2020 at 12:20 am

    First comment

  • February 7, 2020 at 10:12 pm

    How many protective layers should a submarine cable have?

  • February 7, 2020 at 10:20 pm

    Which Is the longest submarine cable?

  • February 7, 2020 at 10:35 pm

    thanks all the people from inside web srl helped us with the animation

  • February 10, 2020 at 1:15 pm

    Which are the biggest data centers in the world?

  • February 10, 2020 at 2:05 pm

    Data center uses SSD?

  • February 11, 2020 at 5:20 pm

    It’s cool how fast internet is


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