The PKA extension is given to files used by a program for simulating simple computer networks called Packet Tracker. PKA files are used by this tool to store data related to online practice sessions. Contains data on the design of the network and its configuration. However, it should be remembered that this solution does not allow for full emulation of systems operating on active network devices.

This solution was developed by the world leader in the computer networks industry Cisco Systems, Inc. It is educational in nature.