You have been asked to use a 28 bit subnet mask to segment the following network block:
108.12.5.0. How many usable hosts per sub-net could you create?

A.
10 hosts

B.
14 hosts

C.
12 hosts

D.
16 hosts

Explanation:
Network: 108.12.5.0/28 (Class A)
Broadcast: 108.12.5.15
HostMin: 108.12.5.1
HostMax: 108.12.5.14
Hosts/Net: 14
http://jodies.de/ipcalc?host=108.12.5.0&mask1=28&mask2=