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A Class C network 192.168.1.0/24 has to be divided into 6 subnets of equal size. Which subnet mask should be used?

2151Medium DSSSB TGT Computer Science 0 replies

A Class C network 192.168.1.0/24 has to be divided into 6 subnets of equal size. Which subnet mask should be used?

  • A255.255.255.192
  • B255.255.255.240
  • C255.255.255.224
  • D255.255.255.248
Correct answer: C

Explanation

Six subnets need 3 borrowed bits (2³ = 8 ≥ 6), so the prefix becomes /27, i.e. 255.255.255.224.
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