ISRO Computer Science (CSE) 2015 - Question 54

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In a class B subnet, we know the IP address of one host and the mask as given below: IP address: 125.134.112.66 Mask: 255.255.224.0. What is the first address (Network address)?

  • A. 125.134.96.0
  • B. 125.134.112.0
  • C. 125.134.112.66
  • D. 125.134.0.0

Answer: A. 125.134.96.0

Explanation: 112 (01110000) AND 224 (11100000) = 01100000 (96).

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