Definition of Protocol
Definition of Protocol
Definition of Protocol
v Protocol is one of the most important components of a computer network.
v Protocol means a set of rules, agreed upon ways or a communication language which all computer and devices understand.
v A protocol defines error checking, how data will be sent and received, and transmitting data between the systems.
v Although each network protocol is different, they all share the same physical cabling. This common method of accessing the physical network allows multiple protocols to peacefully coexist over the network media, and allows the builder of a network to use common hardware for a variety of protocols. This concept is known as “protocol independence“.
v Some Important Protocols and their job:
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Protocol
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Acronym
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Its Job
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Point-To-Point
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PTP
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The backbone protocol of the internet. Popular also for intranets using the internet
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Transmission Control Protocol/internet Protocol
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TCP/IP
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The backbone protocol of the internet. Popular also for intranets using the internet
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Internetwork Package Exchange/Sequenced Packet Exchange
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IPX/SPX
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This is a standard protocol for Novell Network Operating System
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NetBIOS Extended User Interface
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NetBEUI
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This is a Microsoft protocol that doesn’t support routing to other networks
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File Transfer Protocol
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FTP
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Used to send and receive files from a remote host
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Hyper Transfer Protocol
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HTTP
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Used for the web to send documents that are encoded in HTML.
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Network File Services
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NFS
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Allows network nodes or workstations to access files and drives as if they were their own.
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Simple Mail Transfer Protocol
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SMTP
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Used to send Email over a network
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Telnet
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Used to connect to a host and emulate a terminal that the remote server can recognize
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