Calculating IPv4 Subnets and Hosts

Question 1

VLSM (Variable Length Subnet Masks)

Answer 1

• Class-based networks are inefficient
  
  • The subnet mask is based on the network class

• Allow network administrators to define their own
masks
• Customize the subnet mask to specific network
requirements

• Use different subnet masks in the same classful
network
• 10.0.0.0/8 is the class A network - 10.0.1.0/24 and
10.0.8.0/26 would be VLSM