SemSim Router Simulator For CCNA Certification Exam - Version 2.2.1 Router simulator for CCNA certification exam and network engineers. Includes FREE CCNA simulation practice test. Supports over 200 commands, over 30 tutorial labs, 6 CCNA exam simulation scenarios,70 randomized flash cards,3 router tests. Other Features: Test mode/ learn mode, detailed score report pinpoints your weak areas. Great practice supplement to any book on IOS/CCNA. Hands on practice with commands and concepts tremendously increases rentention and is the only way to gain real practical knowledge. Based on new exam format of: 640-801, 640-607, 640-811, 641-821.