Essay Question:

What is the air-speed velocity of an unladen African swallow?

Oh, wait. You don't get to answer that question. Because a horde of zombies just burst through the door looking for tasty human flesh.

Did you really think there wouldn't be a practical part of the exam?

Feel free to fight off the zombies with improvised items from the classroom.

Or the automatic pistols taped underneath the desks. If you notice them.