Minor issue, but the question didn’t state whether it’s going to be class $C$ addressing. But that is understood given the masks are $255.255.255.x$

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Lakshman Patel RJIT
asked
in Computer Networks
Mar 31, 2020
recategorized
Aug 24, 2020
by Lakshman Patel RJIT

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3 votes

In all the classfull subnet mask option first three octet are same

Difference in last octet:

192 represent in binary : 11000000

4 subnet and 62 host

248 represent in binary: 11111000

32 subnet and 6 host

240 represent in binary: 11110000

16 subnets and 14 hosts

224 represent in binary: 11100000

8 subnet and 30 hosts ( most suitable answer)

Option D is correct.

NOTE:

Here we need 5 subnet which is represent in No. Of 1's.

And atleast 16 hosts which is represented of no. Of 0's

Difference in last octet:

192 represent in binary : 11000000

4 subnet and 62 host

248 represent in binary: 11111000

32 subnet and 6 host

240 represent in binary: 11110000

16 subnets and 14 hosts

224 represent in binary: 11100000

8 subnet and 30 hosts ( most suitable answer)

Option D is correct.

NOTE:

Here we need 5 subnet which is represent in No. Of 1's.

And atleast 16 hosts which is represented of no. Of 0's