For 192.168.1.64/26, the conventional usable host range is?

  • A192.168.1.64 to 192.168.1.127
  • B192.168.1.65 to 192.168.1.126
  • C192.168.1.1 to 192.168.1.62
  • D192.168.1.128 to 192.168.1.191
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Correct Answer: B. 192.168.1.65 to 192.168.1.126
Explanation: The network address is .64 and broadcast is .127, leaving .65 through .126 for conventional host assignment.
Reference: Standard computer networking fundamentals: subnetting