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TCP - transmission control protocol
breaks up messages, reassembles, detects errors and resends lost messages
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IP- internet protocol
routes packets around the internet from one IP address to another
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HTTP- hypertext transfer protocol
used for accessing and receiving webpages
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HTTPS - hypertext transfer protocol secure
the information is encrypted so if it intercepted it cannot be understood
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FTP- file transfer protocol
used for sending and receiving files
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IMAP- Internet message access protocol
leaves mesage on the server and syncs with all of your devices, can only be deleted if user deletes email
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POP/3- post office protocol/3
downloads every new message to local device so it is no longer available on the server
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SMTP- simple mail transfer protocol
used for sending emails
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application layer
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applications such as email clients and web browsers create data to send in this layer. SMTP, FTP and HTTP operate in this layer
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transport layer
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the transport layer creates the connection between two computers, or ‘hosts’. data is then divided up into packets and given a packet number. packets are reassembled by the recipient’s transport layer. lost packets are resent. This layer uses TCP.
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internet layer
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the Internet layer is responsible for routing packets. routers operate on this layer
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link layer
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the link layer is responsible for transporting information between nodes on the network.
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
