Homework week 1 - Image blob data

[ArcoMul]

In exercise 3, the image gallery data the students receive binary image data. Is the purpose of the exercise that they convert the blob data to image data which can be displayed?

Or should they use XMLHttpRequest.responseURL (which most of them have been doing now)? Which doesn't make too much sense though, they could also just put the request url straight into an image (except that they get twice the same image then).