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In 802.1s， how 

题目

In 802.1s， how is the VLAN to instance mapping represented in the BPDU？（）

  • A、The VLAN to instance mapping is a normal 16-byte field in the MST BPDU.
  • B、The VLAN to instance mapping is a normal 12-byte field in the MST BPDU.
  • C、The VLAN to instance mapping is a 16-byte MD5 signature field in the MST BPDU.
  • D、The VLAN to instance mapping is a 12-byte MD5 signature field in the MST BPDU.
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相似问题和答案

第1题：

对于字符串“HOW”,下列表示法中正确的是()。

A.’HOW’

B.{HOW}

C.‘HOW’

D.[HOW]


参考答案：A, D

第2题：

10．—________ will it start?

—In a week．

A． How soon

B． How long

C． How often

D． How far


正确答案：A

第3题：

A: Oh, I see. ______ is the holiday? B: About one week long.

A、How long

B、How often

C、How soon

D、How quick


标准答案:A

第4题：

How do you know ________?

A.how old she is

B.how old is she

C.how is she old

D.how is she old


参考答案：A

第5题：

( ) —_______．

—He is six．

A． How old are you

B． How old is she

C． How old is he

D． How old is it


正确答案：C
5．C【N析】根据答语He is six.可知问句是对年龄进行提问，且主语是he，所以同句应是How old is he?正确答案应是C。

第6题：

—_____ can you be ready, Andy?

—In ten minutes.

A. How much B. How often C. How long D. How soon


正确答案：D

第7题：

_______________

A. How to Learn Math

B. How to Communicate with Children

C. How to Teach English Well

D. How to Make the Waste Useful

E. How to Cook Delicious Food

F. How to Use the Internet

G. How to Be Healthy


正确答案：F

第8题：

On Monday morning some teachers exchanged a few ().

A.how-are-yous

B.of how-are-you’s

C.how-are-you’s

D.of how are you


参考答案：B

第9题：

____does Jane write to herparents? Once a week

A.How seldom

B.How often

C.How long

D.How soon


正确答案：B

第10题：

( )people are coming for the party?

A. How often

B. How much

C. How many


答案：C

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