CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains （ ） for the duration of transmission of both damaged frames. The use of random delays reduces the probability of（ ）. For（ ）frames, compared to propagation time, the amount of wasted capacity can be considerable. This waste can be reduced if a station continues to listen to the medium while（请作答此空）.The maximum utilization depends on the length of the frame and on the（ ） time; the longer the frames or the shorter the propagation time，the higher the utilization.
A.colliding
B.forwarding
C.transmitting
D.receiving

互联网编程 通信类考试 软考考试 项目管理 计算机等级考试 教师资格证 房产评估考试 人资类 社会工作 法考 职业资格考试 外贸考试 特种作业 交规类 导游证考试