How does Internet scale to billions of hosts? (Describe what structure and levels are used to organize the hosts, and calculate the numbers of entities at each level.) Answer: Three-level hierarchy...

How does Internet scale to billions of hosts? (Describe what structure and levels are used to organize the hosts, and calculate the numbers of entities at each level.) Answer:

Three-level hierarchy where 256 hosts could be grouped into a subnet and 256 subnets could be grouped into a domain, which could result in 65,536 domains with four billion hosts.