What is the subnetwork number of a host with an IP address of 172.16.66.0/21?
A.172.16.36.0
B.172.16.48.0
C.172.16.64.0
D.172.16.0.0
Answer:C
What is the subnetwork number of a host with an IP address of 172.16.66.0/21?
A.172.16.36.0 B.172.16.48.0 C.172.16.64.0 D.172.16.0.0