2. 计算机
  3. In　low-speed　network,　it　is　usually　adequate　to　wait　for　congestion　to　occur　and　then　react　to　it　by　telling　the　source　of　packe

In　low-speed　network,　it　is　usually　adequate　to　wait　for　congestion　to　occur　and　then　react　to　it　by　telling　the　source　of　packe

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问题 In　low-speed　network,　it　is　usually　adequate　to　wait　for　congestion　to　occur　and　then　react　to　it　by　telling　the　source　of　packets　to　slow　down.　In　high-speed　networks,　this　approach　often　works　poorly,　because　in　the(61)between　sending　the　notification　and　notification　arriving　at　the　source,　thousands　of　additional(62)may　arrive.　In　ATM　network,　a　major　tool　for　preventing(63)is(64)control.　When　a　host　wants　a　new　virtual(65),　it　must　describe　the　traffic　to　be　offered　and　the　service　expected.
选项 A、collision
B、congestion
C、drop
D、delay
答案B
解析
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