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The subnet mask nsub3=

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The subnet mask nsub3=

(a) 28

(b) 27

(c) 26

(d) 24

The question was posed to me during an interview for a job.

This intriguing question comes from Designing Subnets topic in section Internet Protocol, Network Addressing and Transport Level Security of Cryptograph & Network Security

1 Answer

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Best answer
The correct answer is (a) 28

Explanation: The subnet mask nsub3= n+log2(N/Nsub3) = 28.

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