You are planning the network for a branch office. The branch office will contain 100 IPv4 hosts.
You need to recommend a subnet mask for the branch office. The subnet mask must minimize the number of unused IP addresses.
http://www.lead2pass.com/70-642.html
Which subnet mask should you use?
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.0.0
D. 255.255.128.0
