Essay
Unit 28 - Assignment 1 - D1
- Module
- Unit 28 - Website Production
- Institution
- Pearson (PEARSON)
Unit 28 - Website Production, D1- Explain the role of the TCP/IP protocol and how it links to application layers protocols.
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Roland UDVARLAKIUnit 28 – Website Production
D1- Explain the role of the TCP/IP protocol and how it links to application layers protocols.
The abbreviation of TCP/IP stands for ‘Transmission Control Protocol/Internet Protocol’. This is the
standard language/protocol of the internet. This protocol directs all data to the right addresses.
It was developed in 1969 by the U.S. Government. It was created to share, exchange and transport
(from small to large sized) data though a large amount of connected networks. This project was
called ARPANET (Advanced Research Projects Agency Network). It has grown so big that it has
become a world wide standard, and so it has created the nowadays called ‘Internet’.
-It contains multiple (network) protocols that are built into one, and that is the TCP/IP.
-It provides a very high speed of communication between other networks
-It lets more computers to connect and to share data with each other using the World Wide Web
(www). It will also give option to do all this on a private/local or a public way.
-Whenever the computer connects to the World Wide Web (www), TCP/IP will send signs to web
servers to search for connections.
-Used to modify, send, and receive data when it reaches the destination address.
-Enables users on a wide variety of servers and networks to share and exchange files and other type
of data.
-It makes sure that the right data and files are sent to the correct address and it reaches the right
destination without any issues on its way.
-It makes sure that the data (and all files within) is received in the same condition as it has been sent
by the original owner.
-TCP: It’s a delivery service that only works when it’s connected to a reliable network with a working
connection. All data is delivered in packets and small bits that helps sending small and large files
with the help of the internet. All data is sent in an order that will be received in the same way on the
other side where it is going to be sent. This will help preventing data loss and other damages that
could happen to the data throughout the ‘journey’ when delivered. If somehow the data gets
damaged or gets lost, it will try to recover it from the original data owner, and send it again until it
succeeds.
-IP: IP is a protocol just like TCP that makes sure that the data will be sent to the right address using
the right path. IP however does not guarantee that files will be delivered as it’s only responsible for
the destination address and not for the transportation method. IP will not recover files and will not
try to correct its mistakes which makes it unreliable.
TCP/IP has 4 main layers. Each layer defines its own job – This is how it works;
-Application Layer: It will create a connection between the program (started by the user) and the
transport layer. If a program wants to send data though the application layer, it will send it to the
transport layer which will make sure that everything goes to the right address, using different
protocols and methods. The most popular protocols used by this layer are: Hypertext transfer
protocol (HTTP), File transfer protocol (FTP), Simple mail transfer protocol (SMTP), Simple
network management protocol (SNMP) etc.
Roland UDVARLAKI – Assignment 1 – D1 – Page 1 of 3
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