[试题]

F．low control is a function that prevents network congestion by ensuring that _（ ）_ do not overwhelm_（ ）_ with data．There are three commonly used methods for handling network congestion．_（ ）_is used by network devices to temporarily store bursts of excess data in memory until they can be processed．_（ ）_ are used by receiving devices to help prevent their buffers from overflowing．_（ ）_ is a flow－control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted．

A．transmitting devices

B．transmitted devices

C．receiving devices

D．received devices@@@SXB@@@A.transmitting devices

B．transmitted devices

C．receiving devices

D．received devices@@@SXB@@@A.Buffer

B．Source－quench messages

C．window

D．Windowing

E．Buffering@@@SXB@@@A.Buffer

B．Source－quench messages

C．window

D．Windowing

E．Buffering@@@SXB@@@A.Buffer

B．Source－quench messages

C．window

D．Windowing

E．Buffering

参考答案与解析：

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