Refer to the exhibit.
A new subnet with 60 hosts has been added to the network. Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses?
A.
192.168.1.56/27
B.
192.168.1.64/26
C.
192.168.1.64/27
D.
192.168.1.56/26
answer is B.
as we need 60 hosts, but we can get 62 hosts using 6 bits and if we use 5 bits we will get 32 hosts. so we will choose 6 bits for host in the 4th octed that will be /26. so answer B is correct.
we will not use answer D as it is not the network ID.
B 100%
I understand that we should use /26, but what is the reason we can’t choose 192.168.1.56/26
60 hosts we need a subnet mask of at least 6 bit 0s -> “/26″. The question requires “wasting the fewest addresses” which means we have to allow only 62(not less than that ie 56) hosts-per-subnet -> B is correct.
@ IT Engineer
because R3 is using block 192.168.1.48/28 which corresponds 192.168.1.48 thru 192.168.1.63 Therefore, 192.168.1.56/26 can not be used.
Hope it helps!
I choose