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Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?A．255.255.0.0.B．255.255.128.0.C．255.255.224.0.D．255.255.254.0.E．None of the above

题目

Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?

A．255.255.0.0.

B．255.255.128.0.

C．255.255.224.0.

D．255.255.254.0.

E．None of the above

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更多“Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, ”相关问题

  • 第1题：

    下列程序的运行结果是【 】。 include class SomeClass { public: SomeClass(int va

    下列程序的运行结果是【 】。

    include ＜iostream. h＞

    class SomeClass

    {

    public:

    SomeClass(int value) { some_value=value;};

    void show_data(void) { cout＜＜data＜＜"＜＜~some_value＜＜endl; };

    static void set_data(int value) {data=value; }

    private:

    static int data;

    int some_value

    };

    int SomeClass::data

    void main(void)

    {

    SomeClass my_class(1001),your_class(2002);

    your_class. set_data(4004);

    my_elass. show_data()

    }


    正确答案：4004 1001
    4004 1001 解析：本题考查静态成员变量在不同对象间的共享现象。无论哪个对象修改了其静态变量的值，其他对象再访问该变量时已经发生了变化。

  • 第2题：

    An enterprise h as plans to start adding IPv6 support. For the first year, the IPv6 will be in small pockets spread around the existing large IPv4 network, with occasional IPv6 traffic while applications teams test IPv6 - enabled servers and applications.Which of the fol lowing tools would be most appropriate?（）

    A. Native IPv6

    B. Point - to -point tunnels

    C. Multipoint tunnels

    D. NAT - PT


    参考答案：C

  • 第3题：

    （ ） – Is Miss White __________ English teacher, Maria?

    – No, she teaches __________ geography.

    A．your；my

    B．you；mine

    C．you；us

    D．your；us


    正确答案：D

  • 第4题：

    You must segement your internal 192.168.1.0／24 network into a minimun of 12 subnet, each containing a minimun of 12 hosts. Which network mask do you use?()

    A. /26

    B. /27

    C. /28

    D. /29


    参考答案：C

  • 第5题：

    WhichtwostatementsaboutthevariousimplementationsofSTParetrue?()

    A.monSpanningTreemaintainsaseparatespanning-treeinstanceforeachVLANconfiguredinthenetwork.

    B.TheSpanningTreeProtocol（STP）isanevolutionoftheIEEE802.1wstandard.

    C.Per-VLANSpanningTree（PVST）supports802.1Qtrunking.

    D.Per-VLANSpanningTreePlus（PVST+）isanenhancementto802.1QspecificationandissupportedonlyonCiscodevices.

    E.RapidSpanningTreeProtocol（RSTP）includesfeaturesequivalenttoCiscoPortFast，UplinkFast，andBackboneFastforfasternetworkreconvergence.

    F.MultipleSpanningTree（MST）assumesonespanning-treeinstancefortheentireLayer2network，regardlessofthemultiplenumberofVLANs


    参考答案：D, E

  • 第6题：

    关于修改主机名，下面那些说法是正确的

    A．需要修改/etc/sysconfig/network文件

    B．需要修改/etc/hosts文件

    C．需要修改/etc/sysconfig/network-scripts/ifcfg-eth0文件

    D．需要重启系统，让修改生效


    可以使用 nmcli general hostname 命令来修改主机名;可以使用 hostname 命令来修改主机名;可以通过修改 /etc/hostname 文件来修改主机名

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