Hello,

First of all calm down. It's a practical exam. for that you can ask your friends that how you people get evaluated in practical exam. As you belong to computer science then you must be having 1-2 coding labs. one must be operation system. You know the subjects which have lab. when the semester started you might have done 7-8 labs where you were instructed to do some work. Now you have to do the same without guidance.

So review your lab record or your observation note. If you have not written then collect it from your friends.

It's okay to be nervous but don't panic. everything will be okay. Just do your best from your side.

Another point when you did your daily labs, you know how labs are done and what you do there. just practice them. Remember the steps.

Hope it helps!