Any specific topics which I should focus on.
All are equally covered except probably RAC, AR, SSSM and WM. There were only few questions on RMAN: 2 very easy ones and 2 hard ones.

What makes the exam difficult is that they do not ask the basic things, they ask details. Of course there are many general questions too. But there were at least 10 questions about very unimportant things.

Are there any fill in the blanks in this exam
No.

What is the format of questions multiple choice questions.
Half of the questions are choose 1 out of 4. The rest are 2 out 5 or 3 out of 6. There were a couple like 4 out of 7.

Any parameter, Dynamic Views or SQL Statement oriented questions.
Yes.

Primarily I'm using Tim's web site and Oracle 9i Documentation to prepare for it.
It should be more than enough.