Flow　control　is　a　function　that　prevents　network　congestion　by　ensuring　that(66)do　not　over-whelm(67)with　data.　There　are　three　

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问题 Flow　control　is　a　function　that　prevents　network　congestion　by　ensuring　that(66)do　not　over-whelm(67)with　data.　There　are　three　commonly　used　methods　for　handling　network　congestion.(68)is　used　by　network　devices　to　temporarily　store　bursts　of　excess　data　in　memory　until　they　can　be　processed.(69)are　used　by　receiving　devices　to　help　prevent　their　buffers　from　overflowing.(70)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.

选项 A、transmitting　devices
B、transmitted　devices
C、receiving　devices
D、received　devices

答案A

解析

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