选择题:用户U有4000台主机,分配给他16个C类网络。则该用户的地址掩码为______.

题目内容:
用户U有4000台主机,分配给他16个C类网络。则该用户的地址掩码为______.
A.255.255.255.0
B.255.255.250.0
C.255.255.248.0
D.255.255.240.0
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答案解析:

小金丸含有的有毒中药材是

小金丸含有的有毒中药材是A、川乌B、草乌C、朱砂D、红粉E、马钱子

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CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains (请作答此空) for the duration of transmission o

CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains (请作答此空) for the duration of transmission

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易于耗气伤津的邪气有

易于耗气伤津的邪气有A、风邪B、暑邪C、湿邪D、燥邪E、火邪

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密杂吉(气质)学说包括几种正常气质

密杂吉(气质)学说包括几种正常气质A、九种B、七种C、八种D、五种E、六种

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将两根绝缘的铜导线按一定密度互相绞在一起形成双绞线的目的是为了( )。

将两根绝缘的铜导线按一定密度互相绞在一起形成双绞线的目的是为了( )。A.降低信号干扰程度 B.降低成本 C.提高传输速度 D.没有任何作用

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