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Computer & Networking BasicsSubnetting

The subnet mask 255.255.255.0 is equivalent to which CIDR prefix?

  • A/8
  • B/16
  • C/24
  • D/32
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Correct Answer: C. /24
Explanation: 255.255.255.0 contains 24 leading 1 bits, so its CIDR notation is /24.
Reference: Standard computer networking fundamentals: subnetting
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