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protocols and layers (layers (application layer (the application layer…
protocols and layers
layers
layering is the organization of programming into separate functional components that interact in some sequential and hierarchical
application layer
the application layer selects the correct protocol the use depending on which application the user is using
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HTTP
hypertext transfer protocol is used for accessing and receiving web pages in the form of HTML files on the internet
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FTP
file transfer protocol is used for sending or retrieving files to or from a remote server of computer
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IMAP
will only download the message header until the message is opened and will leave the message on the server
TCP
transition control protocol breaks up messages sent over the internet into small chunks called packets reassembles the packets at the other end detects errors resend lost messages
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