一台交换机具有48个10/100Mbps端口和2个1000Mbps端口，如果所有端口_爱下问搜题

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问题单项选择题

一台交换机具有48个10/100Mbps端口和2个1000Mbps端口，如果所有端口都工作在全双工状态，那么交换机总带宽应为______。

A．8.8Gbps
B．12.8Gbps
C．13.6Gbps
D．24.8Gbps

答案

参考答案：C

解析：全双工端口带宽的计算方法是：端口数×端口速率×2，故：48×100Mbps×2+2×1000Mbps×2=13.6Gbps。

完形填空

A student went to college after 41__ all his school examinations. There he put his name down for world geography. 42_ after the first day, he did not go to 43_ any more. The teacher noticed that this student was 44_ absent and thought that he had changed to 45 class. He was very 46_ when he saw the boy's name on the list(名单) of students 47_ wanted to take the geography examination 48_ the end of the year.
The teacher had prepared a difficult examination paper, which covered 49 he had taught, and he was eager to see 50 this student answered the questions. He expected that his answers would be very 51_; but when he examined his paper carefully, he found only one small mistake in them. 52_ this surprised him very much, he went through the paper 53_, but was still not able to find 54 one mistake, so he sent 55 the student to question him about his work after the exam..
When the student had 56 the room, the teacher said to him, “I know that you came to my class only once on the first day and that you have been absent from all the others. Yet I have found only one small mistake in your paper. 57_ is that?”
“Oh, I'm sorry about that mistake, sir, ”answered the student. “After the examination, I realized 58 I ought to have written. I would not have made that mistake 59 I had been confused(弄糊涂) by your 60_ lecture.”

C．arrived into

单项选择题

财政收入的价值构成用字母表示是

A．C、V、M

B．C、V、W

C．C、N、M

D．C、N、W