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Subnetting - Technical MCQs

Q1:

The network address of 172.16.0.0/19 provides how many subnets and hosts?

A 7 subnets, 30 hosts each

B 8 subnets, 8,190 hosts each

C 8 subnets, 2,046 hosts each

D 7 subnets, 2,046 hosts each

ANS:B - 8 subnets, 8,190 hosts each

A CIDR address of /19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.