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.
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.
It is a computing device from where the message will be generated. All computers in a network setup act as a Source.
It is a computing device from where the message will reach. All computers in a network setup act as a Destination.
It is a medium through which the message will transfer from source to destination.
Ex:- Cable, Air
Protocols are set of rules and regulation that govern by data communication. Without protocol
computers are connected but not communicated.
Data can be transmitted in multiple way
ii) Half Duplex
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
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.
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.