CCNA 640-802 Network Simulator, Second Editionis a single-user software package. It helps users develop and enhance hands-on configuration and troubleshooting skills without the investment in expensive lab hardware. This second edition has been updated to include 50 new labs focused exclusively on subnetting practice. These new labs help users to perform subnetting calculations very quickly and accurately, a critical skill for success on the CCNA exams. They are divided into five different types of subnetting practice, helping users master subnet ID calculation, IP address rejection, IP route selection, VLSM overlap, and VLSM route selection. Users will experience realistic network device response as they work through each of the labs developed by best selling author and expert instructor Wendell Odom. The software comes complete with 300 structured labs, including skill building configuration exercises, configuration scenarios, and complex troubleshooting scenarios. All the labs are developed with the objective of gaining the hands-on skills necessary to successfully answer the simulation and scenario-based questions on the actual CCNA exam. Each lab includes detailed instructions, topology diagrams, full answers and complete explanations.