2014年软考网络工程师模拟试题及答案1

　Flow control is a function that prevents network congestion by ensuring that _(1)_ do not overwhelm_(2)_ with data. There are three commonly used methods for handling network congestion . _(3)_is used by network devices to temporarily store bursts of excess data in memory until they can be processed. _(4)_ are used by receiving devices to help prevent their buffers from overflowing . _(5)_ 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.

　　(1)(2)

　　A.transmitting devices

　　B.transmitted devices

　　C.receiving devices

　　D.received devices

　　(3)(4)(5)

　　A.Buffer

　　B.Source-quench messages

　　C.window

　　D.Windowing

　　E.Buffering

　　答案：ACEBD