Given the IP address 200.1.1.130 and the mask 255.255.255.224, what is the subnet number?
A) 200.1.1.32
B) 200.1.1.64
C) 200.1.1.96
D) 200.1.1.128
D
Explanation: D) The 255.255.255.224 mask provides 3 subnet bits (23 = 8 ) and 5 host bits (25 - 2 = 30). For the 200.1.1.0 network, the subnet number using this mask would be 200.1.1.0, 200.1.1.32, 200.1.1.64, 200.1.1.96, 200.1.1.128, and so on, up to 255. The IP address 200.1.1.130 is part of the 200.1.1.128 network, which has a range from 200.1.1.129 through 200.1.1.158.
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