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To calculate the valid host address range, we need to understand the network portion and the host portion of the IP address. The subnet mask 255.255.255.240 has a /28 prefix (since 240 is 11110000 in binary, which corresponds to 28 bits for the network). This means the first 28 bits are used for the network, and the last 4 bits are used for the hosts. In this subnet, the valid host addresses are from 192.168.10.1 to 192.168.10.14 , as 192.168.10.0 is the network address and 192.168.10.15 is the broadcast address, neither of which can be assigned to hosts. Therefore, the valid host range is 192.168.10.1 to 192.168.10.14 . Why Other Options Are Incorrect:
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Statements:
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