How many IP addresses are usable for a subnet that has the address 10.6.128.0/21?
A. 1024
B. 2048
C. 1022
D. 2046
E. 256
How many IP addresses are usable for a subnet that has the address 10.6.128.0/21?
A. 1024
B. 2048
C. 1022
D. 2046
E. 256