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How does a switch respond when i

题目

How does a switch respond when it receives a message?（）

  • A、It reads the Layer-5 information and sends the message directly to the intended computer.
  • B、It reads the Media Access Control (MAC) address and broadcasts the message to all the computers that are connected to the switch.
  • C、It reads the Media Access Control (MAC) address and sends the message directly to the intended computer.
  • D、It reads the Layer-5 information and broadcasts the message to all the computers that are connected to the switch.
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相似问题和答案

第1题：

—I’dlike to know______. —At 6: 30.

A.when does your mother usuallycookbreakfast

B.how your mother usually cooksbreakfast

C.when your mother usually cooksbreakfast

D.how does your mother usually cookbreakfast


参考答案：C

第2题：

－ ()－ It arrives by mail, I suppose.

A、How does your remittance come

B、When will your remittance arrive

C、From which country does your remittance come


参考答案：A

第3题：

The new-designed car is on show now. I wonder _____.

A. how much it cost B. how much did it cost

C. how much it costs D. how much does it cost


正确答案：C

第4题：

I’ve already told you that I′ m going to buy it, ____________

A.however much it costs
B.how much does it cost
C.however does it cost much
D.no matter how it costs

答案：A
解析：
考查让步状语从旬。特殊疑问词+ever既可引导让步状语从句，也可引导名词性从句。本句中however引导的是一个让步状语从句，however后面要接形容词或副词，however much it costs相当于no matter how much it costs。句意为“我已经告诉你了，无论花多少钱，我都要买它”。故A项正确。

第5题：

Only when I got there____how badly the crops had been damaged.

A: did I realize

B: I realized

C: then I realized

D: then did I realize


参考答案： A

第6题：

I was told ______Bill Gates was thirteen he began to play with computers.

A. that how

B. how that

C. when that

D. that when


正确答案：D
[解析] 宾语从句中又含时间状语从句。宾语从句用that引导，时间状语从句用when引导。

第7题：

I often feel lonely when I engage in my online learning.()?

I join the online course community.

A. How do you solve this problem

B. How do you think about it

C. How often do you engage in online learning


参考答案：A

第8题：

How does she manage to keep her ________ when she eats so much?

A.body

B.figure

C.state

D.line


正确答案:B

第9题：

When using a 40 Gbps switch fabric,how much full duplex bandwidth is available to each slot?()

A.1.25Gbps

B.1.65Gbps

C.2.55Gbps

D.5.00Gbps


参考答案：A

第10题：

--How much did this set of furniturecost?
--I forgot__

A.how much it costs
B.how much did it cost
C.how much it cost
D.how much does it cost

答案：C
解析：

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