Computer Networking
Modulation is the process of

performing data encryption.
Multiplexing various signals into high speed line signals
converting digital signals to analog signals
converting analog signals to digital signals

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Computer Networking
What is the purpose of flow control?

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

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