I did my CCNA a couple of years ago, it was split into two exams that you study for separately in order to to get a CCNA. The first exam you pass gets you the CCENT (Cisco Certified Entry Technician) and the second bumps you up to CCNA.
I also used Packet Tracer to simulate the switches and also paid for Boson NetSim. Look those up, you'll find them to be useful. Good luck with your studies, I really enjoy getting on the Cisco gear at work when I get a chance.