单选题As a CCNA candidate, you must have a firm understanding of the IPv6 address structurE.Refer to IPv6 address, could you tell me how many bits are included in each filed?（）A 24B 4C 3D 16

题目
单选题
As a CCNA candidate, you must have a firm understanding of the IPv6 address structurE.Refer to IPv6 address, could you tell me how many bits are included in each filed?（）
A

24

B

4

C

3

D

16

相似考题

1.--I thought you wouldn't mind.--Well, as a matter of fact, I don' t, but you_____________me first.A． should askB． should have askedC． must askD． must have asked

2.You () her in her office last Friday; she's been out of town for two weeks.A、needn’t have seenB、must have seenC、can't have seenD、might have seen

3.－－－ I can’t find my wallet.－－－ _____ it at home?A.Must you leaveB.Maybe you leaveD.You might leftD.Might you have left

4.You must have made the mistake, ()?A.mustn’t youB.haven’t youC.didn’t youD.hadn’t you

更多“As a CCNA candidate, you must have a firm understanding of t”相关问题

  • 第1题：

    --I called you yesterday. A woman answered, but I didn't recognize her voice.

    --Oh, it _________my aunt Jean.

    A． must be

    B． must have been

    C． might be

    D． can have been


    正确答案：B
    对过去情况的肯定推测应用“情态动词+have+过去分词”，且根据句意，可以推断B为正确答案。注意：can表示推测时通常不用于肯定陈述句。

  • 第2题：

    Even if you don't like the work, you ( ) it.

    A、should have done

    B、must have done

    C、must do

    D、have to do


    参考答案：D

  • 第3题：

    You must speak slowly, so that you can make yourself ________.

    A：understood

    B：being understood

    C：understanding


    正确答案：A 

  • 第4题：

    You played so well.You( )a lot.

    A、do not practice

    B、must have practiced

    C、may have practiced

    D、mustn’t have practiced


    参考答案：B

  • 第5题：

    As a CCNA candidate, you must know the various layers of the OSI model. At which layers of the OSI Model do Wide Area Networks operate in? (Choose two)

    A. Physical Layer

    B. Datalink Layer

    C. Network Layer

    D. Session Layer

    E. Transport Layer

    F. Presentation Layer

    G. Application Layer


    正确答案：AB
    A,B 解析：Explanation:
    A WAN is a data communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower two layers of the OSI reference model: the physical layer and the data link layer as shown below.


    Note: Occasionally WAN's would also be considered to operate at layer 3, but since this question asked for only 2 chopices layers 1 and 2 are better choices.

  • 第6题：

    As a CCNA candidate,you must have a firm under standing of the IPv6 address structure.Refer to IPv6 address,could you tell me howm any bits are included in each filed?()

    A.24

    B.4

    C.3

    D.16


    参考答案：D

  • 第7题：

    Must I take a taxi? No, you（）. You can take my car.

    • A、had better to 
    • B、don't 
    • C、must not
    • D、don't have to

    正确答案:D

  • 第8题：

    As a CCNA candidate，you must have a firm under standing of the IPv6 address structure.Refer to IPv6 address，could you tell me howm any bits are included in each filed？（）

    • A、24
    • B、4
    • C、3
    • D、16

    正确答案:D

  • 第9题：

    You work as a database administrator for Supportcenter.cn. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）

    • A、You must have started the database instance in restricted mode.
    • B、You must have started the database instance inNORMALmode.
    • C、You must have started the database instance with server parameter file.
    • D、You must have started the database instance but must not have mounted.
    • E、You must have started the database instance but must not have opened.

    正确答案:C

  • 第10题：

    问答题
    Directions: In this part of the test, you will give your opinion about a specific topic. Be sure to say as much as you can in the time allotted. You will have 15 seconds to prepare. Then you will have 60 seconds to speak.Practice 1　　Some employers value education over work experience because they say it gives employees a more complete understanding of a specific field. Other employers prefer work experience, saying it proves the candidate can deal with real world challenges. Which do you think is better and why? Use specific reasons and examples to support your opinion.

    正确答案： (1)
    From my point of view, I think an employer should hire someone who has more experience in a particular field instead of one who receives better education. Employees with more work experience can put practical experience, which they have learned from real world, into current job. Many of the most successful business people have succeeded without the help and benefit of a formal higher education. To some extent, they have been successful through application and experiences, which cannot be taught and acquired in classroom. After making mistakes, even experiencing failure, and then learning lessons from mistakes, employees can learn and grow, and. finally achieve success. So employers should value experience rather than education when deciding between two otherwise promising candidates.
    解 析:答案选择了工作经验。开头开门见山地表明了观点,继而用补充说明(further explanation)和两个详细说明(detailed explanation)进行了具体说明。
    选择candidate with more experience(经验丰富的求职者)
    主题中心词(Topic keywords):real world,practical experience(现实中的实际经验)
    补充说明:Successful people without higher education(没有接受过高等教育的成功人士)
    详细说明:(1)application,experience(勤勉,经验)
    (2)making mistake,achieving success,experiencing, failure(犯错误,获得成功,经历失败的过程)
    (2)
    Employers should choose a candidate having suitable education to the field or industry, where they are being employed. Education is more important because students are taught certain things in their field, thus they can bring what they have learned to their career. For instance, an accountant is required to apprehend mathematics and the principles of accounting fully, even just to get an entry-level position. Assume someone just has work experience in accounting-related jobs, he might not be lectured the correct way to deal with accounting activities, or he has to waste time and resources to learn on the job. It is better to hire someone who has already acquired profound knowledge and skill set at the very beginning.
    解 析:本回答选择了高学历。在开门见山地表明了观点之后,用两个补充说明和详细说明进行了具体论述。
    选择candidate who has more education(学历高的求职者)
    理由主题中心词:students with certain things within their field(具有专业知识和技能的学生)
    ①补充说明:accountant with mathematics and accounting skill(具有数学和会计知识的会计师) 详细说明:entry-level position(初级职位)
    ②补充说明:accounting-related jobs and jobs with numbers(与会计和数字有关的工作)
    详细说明:not schooled and waste resources(没有接受过学校教育,会浪费资源)
    解析： 暂无解析

  • 第11题：

    单选题
    You must have stayed up late last night, _____?
    A

    mustn’t you

    B

    don’t you

    C

    didn’t you

    D

    needn’t you


    正确答案： B
    解析：
    句意：你昨晚一定熬夜了，对吗？当陈述部分是must have done时，若强调对过去情况的推测(一般有过去时间状语)，反意疑问部分的谓语动词用didn’t＋主语；若前句强调动作的完成，疑问部分谓语动词用haven’t (hasn’t)＋主语。例如：He must have met him yesterday，didn’t he? You must have seen the film，haven’t you? 本句中有明显的时间状语last night，故选C。

  • 第12题：

    填空题
    What qualifies should a candidate have if he wants to be the sales manager?He must be active and ____.

    正确答案： hard-working
    解析：
    从文章的第三个招聘职位的最后一项要求“Active and hard-working”可知。

  • 第13题：

    A:I haven't eaten all day.

    B: You __ be very hungry.

    A. should

    B. have to

    C. must


    参考答案：C

  • 第14题：

    As a CCNA candidate, you will be expected to know the OSI model very well. Which of the following are associated with the application layer (layer 7) of the OSI model? (Choose two)

    A. TCP

    B. Telnet

    C. FTP

    D. Ping

    E. IP

    F. UDP


    正确答案：BC
    B,C 解析：Explanation:
    The application layer is the top layer of the OSI model and is used to describe the end user applications that can be used over a network.

    Layer Name Examples
    Application (layer 7) Telnet, HTTP, FTP, WWW browsers, NFS, SMTP gateways, SNMP

    Incorrect Answers:
    A. TCP resides at layer 4.
    D. ARP is a function of the data link layer, which is layer 2.
    E. IP is used at layer 3 (network layer).

  • 第15题：

    You played so well.You () a lot.

    A.had to have practiced

    B.must practice

    C.must have practiced

    D.should practice


    正确答案：C
    解析：“你玩得很好”这件事发生在过去，后面的话是对过去事情的一种推断、推测，所以需要用 “must have + 过去分词” 结构。

  • 第16题：

    What you saw can' t have been an aeroplane. I' m convincedit____ a large bird.

    A.must be

    B.has been built

    C.must have been

    D.could have been


    参考答案：A

  • 第17题：

    As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?()

    A.24

    B.4

    C.3

    D.16


    参考答案：D

  • 第18题：

    We __the difficulty together, but why didn't you tell me?

    A.should face
    B.might face
    C.could have faceD.
    D.must have faceD.

    答案：C
    解析：
    考查虚拟语气。题中句子是对过去的虚拟，表示本能做却没有做，故选C。

  • 第19题：

    As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）

    • A、24
    • B、4
    • C、3
    • D、16

    正确答案:D

  • 第20题：

    While designing your database， you have created the EMPLOYEEStable as an index-organized （IOT）. You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）

    • A、 A primary key must have been created.
    • B、 A mapping table must have been created.
    • C、 An overflow tablespace must have been specified.
    • D、 The PCTTHRESHOLD option must have been specified.

    正确答案:B

  • 第21题：

    单选题
    As a CCNA candidate, you must have a firm understanding of the IPv6 address structure. Refer to IPv6 address, could you tell me how many bits are included in each filed?（）
    A

    24

    B

    4

    C

    3

    D

    16


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    While designing your database， you have created the EMPLOYEEStable as an index-organized （IOT）. You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）
    A

     A primary key must have been created.

    B

     A mapping table must have been created.

    C

     An overflow tablespace must have been specified.

    D

     The PCTTHRESHOLD option must have been specified.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Must I take a taxi? No, you（）. You can take my car.
    A

    had better to 

    B

    don't 

    C

    must not

    D

    don't have to


    正确答案： C
    解析： 暂无解析

  • 第24题：

    单选题
    As a CCNA candidate，you must have a firm under standing of the IPv6 address structure.Refer to IPv6 address，could you tell me howm any bits are included in each filed？（）
    A

    24

    B

    4

    C

    3

    D

    16


    正确答案： D
    解析： 暂无解析

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