TCP/Ip Application Layers Analysis

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Role of TCP/IP and the link to application layers

Introduction:
In this report I will be talking about different application layers and the protocols within them I will also be explaining what TCP/IT is and how it links back to the application layers.

What is TCP/IP
TCP/IP is a set of rules and regulations which allow for communication to take place. TCP is a protocol a set of rules and regulations that is lets the communication to take place between computers over the internet. TCP is the wrap around a data packet that keeps the data packet intact so it does not break to pieces when it is travelling. On the other hand IP is internet protocol and this protocol makes sure that the data packets know where to go. It makes sure that the data packet knows the route to the receiver of the data packet. IP address is stuck on the data packet it is like a label that has the information of where the data packet has to go and the information of the sender. In order for communication to take place the information has to go through four layers and it all happens in split second.
Explain each of the application layers and the PDU’s within them
There are four layers application, transport, internet and network access. Each application layer has its own PDU and these PDU’s have their own names which are data, segment, packet, frame and bits. Data is the PDU of application layer, segment is the PDU of transport layer, packet is the PDU of internet layer, frame is the PDU of network access and bits are PDU’s of physical download of the files over the network.
Application layer
Application is the layer where data is encoded and decoded, if you open your browser and type in Google in to the URL and press enter the whole process will take place. Ap...

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How does the TCP/IP link back to the application layers?
In each application layer TCP/IP is required to make sure that there is connection between the networks that are communicating with each other and they have to make some kind of connection like a bridge between them. When the connection is made IP is stuck on to the data packet which is sent to the receiver which includes the information about the sender and the receiver e.g. the IP address of the sender which is like your home address so it can be tracked down as well as the destination of the other network so without TCP/IP the data packets would go to the internet and they would not get to their destination they would flow inside the WWW lost without a destination. TCP/IP is a crucial part of web architecture and internet itself. Without TCP/IP protocols we would not be able to use the internet.

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