Computer Networking
The method of communication in which transmission takes place in both directions, but only one direction at a time is called

Half Duplex
Full Duplex
Four wire circuit
Simplex

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Computer Networking
What is the purpose of flow control?

To ensure that data is retransmitted if an acknowledgment is not received.
To reassemble segments in the correct order at the destination device.
To provide a means for the receiver to govern the amount of data sent by the sender.
To regulate the size of each segment.

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