未分类题

●在相隔400km 的两地间通过电缆以 4800b/s 的速率传送 3000 比特长的数据包，从开始发
送到接收完数据需要的时间是（13）。
（13)
A.480ms
B.607ms
C.612ms
D.627ms

A.480ms
B.607ms
C.612ms
D.627ms

【参考答案】

D
试题(13)分析
一个数据包从开始发送到接收完成的时间包含两部分：发送时间tf和传播延迟时间tp，......

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