You need subnet a Ezonexam network segment. How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?A. 30 networks and 6 hosts.B. 6 networks and 30 hosts.C. 8 networks and 32 hosts.D. 32 networks a

题目

You need subnet a Ezonexam network segment. How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?

A. 30 networks and 6 hosts.

B. 6 networks and 30 hosts.

C. 8 networks and 32 hosts.

D. 32 networks and 18 hosts.

E. 16 networks and 14 hosts.

F. None of the above

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参考答案和解析
正确答案：E
E 解析：Explanation:
A 28 bit subnet mask (11111111.11111111.11111111.11110000) applied to a class C network uses a 4 bits for networks, and leaves 4 bits for hosts. Using the 2n-2 formula, we have 24-2 (or 2x2x2x2-2) which gives us 14 for the number of hosts, and the number of networks is 24 = 16.

Incorrect Answers:
A. This would be the result of a /29 (255.255.255.248) network.

B. This would be the result of a /27 (255.255.255.224) network.

C. This is not possible, as we must subtract two from the subnets and hosts for the network and broadcast addresses.

D. This is not a possible combination of networks and hosts.
更多“You need subnet a Ezonexam network segment. How many subnetworks and hosts are available p ”相关问题

  • 第1题：

    有如下类定义： class Point{ private： static int how_many； }； ______how_many=0； 要初始化Point类的静态成员how_many，在下画线处应填入的内容是

    A．int

    B．static int

    C．int Point::

    D．static int Point::


    正确答案：C

  • 第2题：

    以下程序的输出结果是()。main(){char*a[][5]={“how”,”do”,”you”,”do”,”!”};char**p;inti;p=a;for(i=0;i<4;i＋＋);printf(“%s”,p[i]);}()

    A.howdoyoudo!

    B.how

    C.howdoyoudo

    D.hdyd


    正确答案:C

  • 第3题：

    有如下类定义： class Point{ private： static int how_many； }； ___________how_many=0； 要初始化Point类的静态成员how_many，下画线处应填入的内容是( )。

    A.int

    B.static int

    C.int Point：：

    D.static int Point：：


    正确答案：C
    本题考查静态数据成员，静态数据成员可以初始化，但只能在类体外进行初始化，其一般形式为：数据类型类名：：静态数据成员名=初值。所以本题答案为C。

  • 第4题：

    有如下类定义：\nclassPoint{\nprivate;\nstaticinthow_many;\n};\n___________how_many=0;\n要初始化Point类的静态成员how_many，下划线处应填入的内容是

    A、ing

    B、staticint

    C、intPoint::

    D、staticintPoint::


    参考答案：D

  • 第5题：

    有如下类定义： class Point{ private： static int how_many； }； ______how_many=0； 要初始化Point类的静态成员how_many，下划线处应填入的内容是

    A．int

    B．static int

    C．int Point: :

    D．static int Point


    正确答案：C
    解析：static　int　n；是定义静态全局变量，int　point是定义类的。

  • 第6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

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