Hi Ravi,
I did have a little experience in Servlets, but almost no
experience in JSP. I think it's very likely that you can
pass the exam with a good score and also in a short period
of time. 2 months is enough if you spend 2-3 hrs everyday
preparing for it.
Roughly speaking, exams questions can be divided into 2
categories. One requires you to memorize API and ruls,
the other one requires you to know how things really work.
For the second category, what I did is to actually write
and run some sample codes to see how does it work.
Whenever I have a doubt of the behavior of Servlets/JSP,
I will just write some codes to
test it.
Hope this will help.
Good luck.