If IP address is 202.130.191.33 and subnet mask is 255.255.255.0,then subnet prefix is___________.

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问题 If IP address is 202.130.191.33 and subnet mask is 255.255.255.0,then subnet prefix is___________.

选项 A、202.130.0.0
B、202.0.0.0
C、202.130.191.33
D、202.130.191.0

答案D

解析 如果IP地址是202.130.191.33,子网掩码是255.255.255.0,那么子网前缀是什么?根据子网前缀的计算方法,202.130.191.0是正确答案。
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