You can download the Packet Tracer 8.1 simulator program to your computer from the Downloads section after you create your Cisco Netacad account.
If you do not have a Cisco Netacad account, you can download Packet Tracer 8.1 for free by browsing the article below.
Read Article: Cisco Packet Tracer 8.1 Download
Cisco Packet Tracer 8.1 enables Packet Tracer Tutored Activities (PTTA), a new type of activity that provides hints to the learner along the way if they want them. Packet Tracer Tutored Activities (PTTA) are designed to provide a more personalized and equitable learning experience. In addition, Cisco Packet Tracer 8.1 includes bug fixes and improvements on accessibility, usability, and security.