As far as I remember, I did not get any questions, in part 1 exam, specific to
servlets or jsps. You just need to know what they are and where they are used. But, I think, for part 2(for assignment)
you should have fair knowledge about these two. In my opinion, it is better to do SCWCD (even before giving SCEA part 1 exam) before proceeding to SCEA.