单选题Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?（）AIt ensures that data is retransmitted if an acknowledgment is not received.BIt reassembles segments in the correct order on the destination device.CIt provides a mechanism for the receiver to control the transmission speed.DIt regulates the size of each datagram segment.EAll of the above are functions of flow control
单选题
Network equipment supporting the use of flow control mechanisms has been recently installed. What is the purpose of flow control in a data network?（）
A
It ensures that data is retransmitted if an acknowledgment is not received.
B
It reassembles segments in the correct order on the destination device.
C
It provides a mechanism for the receiver to control the transmission speed.
D
It regulates the size of each datagram segment.
E
All of the above are functions of flow control
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