题目内容

210.89.56.178和下列PC()属于同一子网。

A. 210.89.56.173/28
B. 210.89.56.190/28
C. 210.89.56.165/28
D. 210.89.56.130/28

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61.131.87.30/28子网中最小的可用IP地址是( )

A. 61.131.87.17
B. 61.131.87.15
C. 61.131.87.1
D. 61.131.1.1

IP地址11001101 11110111 10000011 00001111的点分十进制为( )

A.205.247.131.15
B.205.237.131.15
C.205.247.151.15
D.205.247.31.15

子网172.16.0.0/23有()个可用的IP地址;

A. 510
B. 512
C. 256
D. 254

61.187.0.0/19能划分( )个26位的子网;

A.126
B.128
C.64
D.256

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