Using a Class C address space of 19988770 you are asked to c

Using a Class C address space of 199.88.77.0, you are asked to create a subnet mask for the new network design. Each subnet must be capable of supporting 20 hosts. Which subnet mask best complies with the request, and how many subnets can be created?

A. 255.255.255.192, creating four subnets

B. 255.255.255.224, creating eight subnets

C. 255.255.255.240, creating 16 subnets

D. 255.255.255.248, creating 32 subnets

Solution

B. 255.255.255.224, creating eight subnets                                                                                            

255.255.255.224 subnet mask best complies with the request, and eight subnets can be created