The purpose of this lesson is to give you some experience with an SDN platform that is widely used, which is OpenDaylight. OpenDaylight is Linux-based only and cannot be run in a Windows environment. The particular steps shown in the lesson that have detailed Linux commands are there for the purpose of installation and setup of that particular program.
The same is true about the Mininet platform.
The lesson allows you to set up an environment in which you can experiment with RESTONCF API, Yang UI, Postman, and Python. The focus is on these SDN related tools, however, the setup required some Linux commands and related setup.
You are not expected to know in any detail these Linux commands for any Cisco certification exam, however, it is useful to learn the basics in order to be able to deploy similar environments on your own.
I hope this has been helpful!