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3.1.2 Network Protocols - Explain the need for communications protocols…
3.1.2 Network Protocols - Explain the need for communications protocols
Common Protocols
TCP/IP
Transmission Control Protocol/Internet Protocols
WAP
Wireless Access Protocol
VoIP
Voice Over Internet Protocol
HTTP
Hyper Text Transfer Protocol
FTP
File Transfer Protocol
Definitions
Protocol:
An agreed set of rules sending and receiving data on a network to prevent data collisions.
Communications Protocol Definition:
A communication protocol is a set of rules or procedures that enable devices on computer networks using different technologies (or from different manufacturers) to communicate.
What do protocols do?
Most used protocol on most LANs and the Internet is the TCP/IP protocol
Protocols Define
How to establish connection between machines
The format of data that is to be transmitted between machines
How errors are corrected
How errors in data will be detected
Speed of Network
Another extremely common protocol is HTTP
Why do we need Protocols?
Devices may differ in transmission speeds/character sets/error detecting methods/security levels.
Communication Protocols allow different devices to communicate using the same rules/standards