More about Cisco Packet Tracer
Cisco Systems has created Cisco Packet Tracer and provides it at no cost. The System Utilities category, the Network section, to which this program belongs to; it flawlessly processes the following extensions: .pka, .pkt, .pkz. We recommend you to download the versions 7.1 and 6.0 and launch them on Windows 7/10/8.1. PacketTracer5.exe and PacketTracer6.exe are the most popular installer names of the software you may come across. The antivirus analysis of the download link proved it to be clean.