3.1.a [i] Address types, VLSM
There are three types of IPv4 addresses, namely:
● Host address ● Network or Subnetwork address ● Broadcast address
Within each type, there are five classes that addresses can be carved out from. Those classes are known as A, B, C, D, and E.
Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 2229-2235). . Kindle Edition.