MCSA/MCSE 70-291: Variable Length Subnet Masking and Client Configuration
Introduction
The explosive growth of networking and the Internet over the past decade has brought to fight one of the few limitations of class-based, or classful, IP addressing. Under the current addressing scheme based on IPv4, Class A and B networks allow for a large number of hosts per network but fewer networks with unique network IDs, thus limiting the number of Class A and B networks in the world. Class C networks are more plentiful, but they are limited in the ...
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