How many usable host addresses are available in a traditional IPv4 /24 subnet?

Options

  • A. 254
  • B. 256
  • C. 255
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. 254

Detailed Explanation

Explanation: A /24 subnet has 8 host bits. Total addresses = 2^8 = 256. In a traditional subnet, one address represents the network and one is the broadcast address. Therefore, usable host addresses = 256 - 2 = 254.