Here is my attempt.

Novice/Competent

xs is a numpy array.  Which command sets all but the first and last values in xs to 0?

• A — xs[0:-2] = 0
• B —  xs[1:-2] = 0
• C — xs[0:-1] = 0
• D —  xs[1:-1] = 0

Competent/Expert

ys is a numpy array with shape (3,2,3)

xs is another numpy array, and we would like to add them by:

zs = xs + ys

Which one of the following shapes is valid for xs?

• A — (3,2)
• B — (3,2,1)
• C — (3,3,3)
• D — (3,2,3,3)