Cisco Packet Tracer 8.1.0.0721/0722

An innovative and powerful networking simulation tool used for practice, discovery and troubleshooting. Cisco developed Packet Tracer to help Networking Academy students achieve the most optimal learning experience while gaining practical networking technology skills. Packet Tracer is a powerful network simulation platform inspiring students to experiment with network behavior and ask 'what if' questions. It supplements physical equipment in the classroom by allowing students to create a network with an almost unlimited number of devices, encouraging practice, discovery and troubleshooting.

https://developer.team/misc-development/31619-cisco-packet-tracer-8100721-0722.html