Cisco Packet Tracer 5.3.3 Build 0019

Packet Tracer - emulator data network, manufactured by Cisco Systems. Allows you to make a workable model network, configure (teams Cisco IOS) routers and switches communicate between multiple users (via the cloud). Includes the Cisco 1800 series routers, 2600, 2800 and 2950 switches, 2960, 3650. In addition there are servers DHCP, HTTP, TFTP, FTP, workstations, various modules to computers and routers, devices, WiFi, different cables.
Successfully allows you to create even complex layouts networks, check on the performance of topology. Available free of charge for participants Networking Academy Cisco.