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You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?A．225.225.224.0.B．225.225.240.0.C．225.225.255.0.D．255.255.255.224E．225.225

题目

You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?

A．225.225.224.0.

B．225.225.240.0.

C．225.225.255.0.

D．255.255.255.224

E．225.225.255.240

相似考题

1.You look(). What () you () ?A、tire, did…doB、tiring, have…doneC、tired, do…doD、tired, have…been doing

2.How long() you() a member of the club?A.have,,joinedB.have,,beenC.has,,joinedD.has,,been

3.May I take this book out of the reading room? No,you . You read it in here. ( )A. mightn’tB. won’tC. need’tD. mustn’t

4.Your little girl is becoming very rude. You ________ scold her.A.mayB.canC.ought toD.need

参考答案和解析
正确答案：D
解析：Explanation:ThedefaultsubnetmaskforclassCnetworkis255.255.255.0.Ifonehastocreate5subnets,then3bitsarerequired.With3bitswecancreate8subnets.Theremaining5bitsareusedforHosts.Onecancreate30hostsusing5bitsinhostfield.Thismatcheswiththerequirement.IncorrectAnswers:A,B:ThisisanillegalsubnetmaskforaclassCnetwork,asthethirdoctetcannotbedividedwhenusingaclassCnetwork.C:ThisisthedefaultsubnetmaskforaclassCnetwork.Itprovidesforonenetwork,with254usablehostIPaddresses.E:Thissubnetmaskwillprovidefor14separatenetworkswith14hostseach.Thisdoesnotmeettherequirementofaminimumof18hosts.
更多“You have a class C network, and you need to design it for 5 usable subnets with each subne ”相关问题

  • 第1题：

    Where ________ you ________?

    A.are/be

    B.have/be

    C.is/be

    D.have/been


    正确答案：D

  • 第2题：

    —Where____you____lunch?

    —Athome．Therewasnoschoollunch

    A．did；have

    B．are；having

    C．will；have

    D．do；have


    正确答案：A

  • 第3题：

    以下对于列表的相关操作中哪些项有正确的输出结果？

    A.＞＞＞ language = list('PHP'); ＞＞＞ language[1:] = 'ython'; ＞＞＞ print(language) ['P', 'y', 't', 'h', 'o', 'n']#B.＞＞＞ print(list('Life is short, you need Python.').count('is')) 1#C.＞＞＞ x = [2, 3, 0, 4, 1] ＞＞＞ x.sort() ＞＞＞ print(x) [0, 1, 2, 3, 4]#D.＞＞＞ words = ['Life', 'is', 'short', 'you', 'need', 'Python'] ＞＞＞ words.index('you') 4
    ＞＞＞ language = list('PHP'); ＞＞＞ language[1:] = 'ython'; ＞＞＞ print language ['P', 'y', 't', 'h', 'o', 'n'];＞＞＞ x = [2, 3, 0, 4, 1]＞＞＞ x.sort()＞＞＞ print x[0, 1, 2, 3, 4]

  • 第4题：

    9． _______you _______ stay at home today?

    A． Do ; have to

    B． Must; have to

    C． Have; to

    D． Do ; must


    正确答案：A
    9．A【解析】have to的疑问形式借助动词do来实现， must的疑问形式是将must提到主语之前，另外还需注意have to与must不能重复使用。故答案为A。

  • 第5题：

    You look（） What（）you（）?

    Atire；did；do

    Btiring；have；done

    Ctired；do；do

    Dtired；have；been doing


    D
    略

  • 第6题：

    你最好控制一下上网聊天的时间。（汉译英）

    A．You'd better set a limit for your online chat time.

    B．You'd better set a limit on your online chat time.

    C．You'd better set a limit on your online chatting time.

    D．You'd better set a limit for your online chatting time.


    You'd better set a limit on your online chatting time.

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