Data communication is the exchange of data between two nodes via some form of link (transmission medium) such as cable.
it means nodes are going to exchange the data.
data is going to flow from one node to another node
there are 3 forms of data flows.
- Half duplex
- Full duplex
In simplex data flows, communication is always unidirectional.
One device can transmit and other devices will receive the data.
examples: keyboard, traditional monitors, etc.
- In a half-duplex, communication is in both directions but not simultaneously.
- If one device is sending, the other devices can only receive the data at the same time & vice versa. ex: walkies-talkies
It is also known as a Duplex.
Communication is in both directions simultaneously.
Devices can send or receive the data at the same time.
ex: Phone call i.e we can talk and listen to the voice at the same time.
Thanks for reading.
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