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Given the following IP address from the Class B address
range 172.35.21.12. Your network plan requires no more than
126 hosts on a shored. Which value should you use as the
subnet mask?

A. 255.255.0.0

B. 255.255.128.0

C. 255.255.126.0

D. 255.255.255.128

E. 255.255.255.252

Answer Posted / rav

hi guys D. 255.255.255.128 is correct answer
let me explain
our requirement 126 host and possible host in subnet is 128

formula is total no of host in class/total no of required host
then key value is 9
and calculated subnet bits is 16+9=25
answer 255.255.255.128

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