Packet Tracer is a Network simulation software developed by Cisco Systems. It is used to analysis network behavior. You can simulate the behavior of switch, router etc using this software. The latest version is Packet tracer 6.0. The older version Packet Tracer 5.3.3 is used in several Cisco Networking Academy Program.Its mainly used in lab. This version is also used in KUET CNAP. So I here I have provided the direct download link of
