【单选题】For each blank, choose the best answer from the four choices and write down on the answer sheet. (71)is a channel' s capacity which directly reflects the data transfer rate of the channel. (72)functio...
【单选题】For each blank, choose the best answer from the four choices and write down on the answer sheet.(21)is a six bytes OSI layer 2 address which is burned into every networking evice that provides its uni...