Hello,

Previous year MSc Data Science question paper is not available. For question bank, you can visit cmi official webpage where they have provided MSc Data science question paper from year 2011.

There are Youtube Videos which you can get for answer's explanation.

For CIT question papers, You have to ask to MSc 1st year students or teachers if you know anyone.

One the first step, You have to Read the prescribed book and cover it end to end. Every year few questions are asked directly from book from sections like examples or end chapter questions.

2nd step, evaluate yourself by solving question bank. Focus more on your weak section.

Hope it helps!