The subnet mask corresponding to /27 is?

  • A255.255.255.128
  • B255.255.255.192
  • C255.255.255.224
  • D255.255.255.240
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Correct Answer: C. 255.255.255.224
Explanation: A /27 mask has 27 leading 1 bits, giving 255.255.255.224.
Reference: Standard computer and networking fundamentals: advanced subnetting