SemSim Cisco CCNA subnetting tutorial & practice questions. Subnetting is explained with examples. Learn to subnet and understand concepts such as subnet mask and ip addressing. The tutorial is follwed by a subnetting quiz to test your understanding. Post assessment exercises after the course gives you hands on practice. Topics covered include: define subnet and subnet masks, IP subnetting math, Network & private addressing . You can apply the concepts to any networking application. Special emphasis is given on Cisco CCNA certification subnetting questions.