设计一个网络时,拟采用B类地址,共有80个子网,每个子网约有300台计算机,则子网掩

题型:单项选择题

问题:

设计一个网络时,拟采用B类地址,共有80个子网,每个子网约有300台计算机,则子网掩码应设为(13)。如果采用CIDR地址格式,则最可能的分配模式是(14)。

空白处(13)应选择()

A.255.255.0.0 

B.255.255.254.0 

C.255.255.255.0 

D.255.255.255.240

考点:计算机软件水平考试高级网络规划设计师计算机水平考试高级网络规划设计师2010年上半年上午真题
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To their   34         (amaze), the car had been returned and there was a note in it ,  35  _______  said: “I apologize for taking your car. My wife was having a baby and I had to send her to the hospital as soon as possible. Please forget the          36           (convenient). There are two tickets   37        tonight’s Rowan Atkinson concert.”

Their faith in humanity restored(恢复). The couple attended         38       concert. But   39          they returned home, they immediately found that their house had been ransacked (洗劫). On the bathroom mirror was           40           note: “I have to put my kid through college somehow, don’t I?”

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B.竣工情况说明书
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D.工程造价对比分析

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B.转弯半径尽可能大一些

C.制动应缓慢一些

D.抬起离合器的速度要快

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