D1

Explain the role of the TCP/IP protocol and how it links to application layer protocols

Task 1.3    

This task is for Distinction.

For this task, you need to explain the role of the TCP/IP protocol and how it links to application layer protocols. You need to provide a technical explanation of application layer protocols in relation to the TCP/IP protocol.  You must explain how HTTP, HTTPS and SMTP work in the application layer. [D1]

Protocols are the way that alternative systems communicate with one another. This can be known as a 'handshake'.  A great example of this is like when you use an app service like google translate where you speak English into one side and German can be repeated out the other side.

TCP/IP Transfer Control Protocols/Internet Protocols, this is responsible for the transporting data throughout the internet ensuring it reaches the correct location or address. The TCP/IP is made up of four individual layers these layers. These layers all have a unique ability when operating all dealing with different issues.

The link layer deals with the lowest form which is routers servers and other hardware.

The internet layer focuses on the finding the and targeting the IP address.

The transport layer will create a connection between the hosts and will move the packet to the destination required.

The application layer is the highest form layer of them all, this layer contains:

• Hypertext Transfer Protocol (HTTP)
• Simple Mail Transfer Protocol 
  (SMTP)
• Hypertext Transfer Protocol Secure (HTTPS)
• Post Office Protocol (POP) and Internet a Message Access Protocol (IMAP) 

Hypertext Transfer Protocol (HTTP://) is the protocol that enables the connection between a web server and a client/user it is an application layer protocol for distributing information in the World Wide Web (WWW.). Hypertext Transfer Protocol (HTTP://) is based on the client–server architecture.

SImple Mail Transfer Protocol (SMTP) this is mainly used for receiving and sending emails this protocol is very limited in its ability do it requires more than itself as a protocol to function. Without other protocols the user won't be able to save emails.

Hypertext Transfer Protocol Secure (HTTPS) this is the same at HTTP except the S stands for secure you mainly find this in websites where you are required to insert information like a banking site or an email page, this is because private data is being transferred.

Post Office Protocol (POP) and Internet a Message Access Protocol (IMAP) these help operate at a client level fir mail servers