While was a robust and beloved version in its day—especially for introducing IoT to the CCNA curriculum—it is now a legacy piece of software. If you find yourself needing it, ensure you download it directly from your Cisco NetAcad course page, and consider running it in a virtual machine with an older OS for compatibility and security.
Cisco Packet Tracer 7.1.1 comes with a wide range of features that make it an ideal tool for network simulation and modeling. Some of the key features include: Cisco Packet Tracer 7.1.1 Download