ISRO Computer Science (CSE) 2008 - Question 3

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The subnet mask 255.255.255.192

  • A. extends the network portion to 16 bits
  • B. extends the network portion to 26 bits
  • C. extends the network portion to 36 bits
  • D. has no effect on the network portion of an IP address

Answer: B. extends the network portion to 26 bits

Explanation: 255.255.255.192 in binary is 11111111.11111111.11111111.11000000. This corresponds to a /26 prefix length (8+8+8+2 = 26 bits).

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