Computer Networks | Network Layer | Question 1

If a Company require 60 hosts then What is the best possible subnet mask?
(A) 255.255.255.0
(B) 255.255.255.192
(C) 255.255.225.224
(D) 225.225.255.240


Answer: (B)

Explanation: Number of host = 2 ^ n – 2 , where n is number of host bits.

2^n – 2 = 60

Solving for n, n is approximate equal 6, so 6 host bits are enough . So desired subnet mask is 11111111.11111111.11111111.11000000

255.255.255.192

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