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technology Online Quiz - 1750
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Which subnet does host 172.21.23.7 255.255.254.0 belong to?
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A
172.21.22.0
💡 Explanation:
The subnet mask 255.255.254.0 (/23) means 23 bits for network, 9 bits for hosts. IP 172.21.23.7 has third octet 23 (00010111). Mask's third octet is 254 (11111110). AND operation gives 22 (00010110). Network address is 172.21.22.0. The /23 subnet spans 172.21.22.0 to 172.21.23.255.