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Network Protocol & Communication, Protocol determines WHAT, HOW, WHEN…
Network Protocol & Communication
Simplex
One direction only
No output (only send)
Ex: Keyboard / microphone
Half-Duplex
Both direction
Non simultaneously
(able to send data to each other but not at the same time)
Ex: Walkie-Talkie
Full Duplex
Both direction
simultaneously
able to send data to each other at the same time
Ex: Skype / Telephone
Protocols
Source or sender
Things in common between all protocols
Destination or receiver
Channel or media
Message source
Encoder (signal)
Transmittion medium
Decoder (signal)
Message destination
Protocol determines WHAT, HOW, WHEN it is communicated
Human communication
An identified sender and receiver
Common language/grammar
Speed/timing of delivery
Network communication
Message Encoding
Message size
Message formmating
Exchange of data between 2 nodes via some link (transmission medium)
Rules/Protocols are rules that govern all methods of communication
Protocols required are: