Data:-
In data communication, Data is the information that will be used to communicate agreed between the source and destination computing device.
Types of Data:-
Text Data:-Contains single or multiple line text.
Audio Data:- Contains audio file.
Multimedia:- Contains video file.
Communication:- In data communication the message will transfer from source to destination through the various numbers of communicating devices.
Computer Network:-
When two or more devices are connected to a particular link then it is called Network.
Components of computer network:-
Message:-It is a information or different contents to be transmitted.
Source:-
It is a computing device from where the message will be generated. All computers in a network setup act as a Source.
Destination:-
It is a computing device from where the message will reach. All computers in a network setup act as a Destination.
Transmission Media:-
It is a medium through which the message will transfer from source to destination.
Ex:- Cable, Air
Protocols:-
Protocols are set of rules and regulation that govern by data communication. Without protocol
computers are connected but not communicated.
Data Flow:-
Data can be transmitted in multiple way
i) Simplex
ii) Half Duplex
iii) Duplex
Simplex:-
In simplex mode, dataflow data will be transmitted in one direction. i.e sender will send the data and receiver will always receive the data
Half Duplex:-
In Half Duplex mode, dataflow data will be transmitted in a bidirectional manner, not at a time. The source can be a sender and receiver not at a time.
Duplex:-
In Half Duplex mode, dataflow data will be transmitted in bidirectional at a time. Both the source and receiver can be a sender and receiver at a time.