While giving a few mock tests i came across - qns where the author says that no answer given is right. And so we should not mark anything.
Which sounded pretty weird to me. So i got the foll two points cleared from the Certification Manager at Sun. Here are her replies for all of u who were as confused as me

!
----
> 1) I have heard from a couple of friends who took the exam, that there were questions where none of the given options were correct answers. So they left it blank - but upon clicking finish exam - they got a message saying - 1 question unanswered. I would like to know - if there are questions like that in the exam where the correct answer would be none of the options given. What are we supposed to do in such a case.
Ans :
You must select at least one answer for every question. There are no questions that do not have an answer. If, when you are taking the exam, you find a question you think may not have a correct answer select the best possible answer.
>
> 2) For Fill in the Blank questions are we to enclose the answers in > quotes(eg : "ActionListener")and end in a semicolon ;(if its a statement).
Ans:
Fill in the answer as it would appear if you were writing actual code for a program. You do not need to include quotation marks.
Diane Hudlin
Certification Program Manager
Development Technologies
Sun Educational Services
Phone: 303-272-7728
EMAIL:
diane.hudlin@central.sun.com