If you don't know or haven't read what is Question's Framework, read this article first.
Now let's understand how you can apply the Questions framework.
So, you will be asking the questions to your teammates and stakeholders to get the information.
The below diagram shows the answers you got.
The above diagram is the first iteration of understanding. It hasn't provided you with specific information about your work.
So, do another iteration of the same questions with the next level of details for deeper understanding.
By doing another iteration you now have a better understanding of the component that you are responsible for.
I haven't gone into details of each answer, in your case you should expect to get much more information than what I mentioned above.