[_snsh]

Yes, if you want to use a cell phone and/or a computer to complete your tasks you should have some basic knowledge about how it operates.

You can shift responsibility for that knowledge wherever you want but I would say that at the age between 16 and 19 (which google tells me is the average age for AP classes) I would expect that knowledge from someone applying for AP credit. And if someone didn't know what the accepted file types (as stated in the FAQ) meant at that age I'd expect them to figure it out for themselves.

[thomasfedb]

I'm unsure that any of these students wanted to take their AP exams on their phone or computer. That this is a new problem suggests that this is something they've been newly forced to deal with.

It's certainly not a well engineered user experience. Passing a physics test should require physics knowledge, not knowledge of image formats. I think understanding of image formats is actually fairly obscure outside of technical circles.