Which action does the ping 172.18.1.1 size 5 command perform?()A. It sends only five ping requests to the 172.18.1.1 destination.B. It sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.C. It sends five rapid ping req

题目
Which action does the ping 172.18.1.1 size 5 command perform?()

A. It sends only five ping requests to the 172.18.1.1 destination.

B. It sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.

C. It sends five rapid ping requests to the 172.18.1.1 destination.

D. It sends a continuous rapid ping with a packet length of five bytes to the 172.18.1.1 destination.


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  • 第1题:

    Whichofthefollowingisthecorrectformatfor/etc/inittabentries()

    A.Runlevel:Action:Identifier:Command

    B.Identifier:Runlevel:Action:Command

    C.Command:Action:Identifier:Process

    D.Process:Runlevel:Command:Identifier


    参考答案:B

  • 第2题:

    4.—_________ Mike________ his homework in the evening?

    —No,he doesn't.

    A. Do;does

    B. Does;do

    C. Do;do

    D. Does;does


    正确答案:B
    4.B【解析】考查实义动词的疑问式为“Does+主语+do,故选B。

  • 第3题:

    使用ping命令进行测试,丢包率是通过( )计算出来的。

    A.sent
    B.receive
    C.lost
    D.time
    E.size

    答案:A,B
    解析:
    使用ping命令测试,packets:sent=送出的数据包数,received=接收到的返回数据包数,由此计算的百分比就是丢包率。

  • 第4题:

    Whichofthefollowingcommandswouldresultinthefollowingoutput:M.M.M()。

    A.Ping10.1.1.1DataPatternM

    B.Ping10.1.1.1timeout0

    C.Ping10.1.1.1size1500df-bit

    D.Ping10.1.1.1sourceloopback0

    E.Ping10.1.1.1size1500

    F.Ping10.1.1.1size1500Strict


    参考答案:C

  • 第5题:

    Which of the following may illustrate the difference between "competence" and__________ "performance"?

    A.What a person "knows" and what he/she "does".
    B.What a person "can do" and what he/she "does".
    C.What a person "does" and what he/she "knows".
    D.What a person "does" and what he/she "can do".

    答案:A
    解析:
    考查语言学知识。competence“语言能力”,指语言使用者对于语言规则系统的潜在意识;performance“语言运用”,指在具体场景中语言的实际运用,二者对应的分别为“knows”和“does”。故选A。