1.

What is the prefix length for group 3?(a) 28(b) 26(c) 24(d) None of the mentionedThe question was asked at a job interview.My doubt stems from Designing Subnets in division Internet Protocol, Network Addressing and Transport Level Security of Cryptograph & Network Security

Answer»

The correct answer is (b) 26

The BEST I can explain: 128 customers, each NEEDS 64 addresses

Suffix LENGTH = 6 (2^6=64)

Prefix length = 32-6= 26.



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