As the name suggests that it is a review on the past literature, this part is much more than this statement. Obviously, you have to give review on the past researched work done but the concern is that you need to deeply study and examine the past work. Here you are required to find out the loopholes of research work and what points are missing in the work of past authors. Highlight them all and show how your work could help to remove those loopholes from the past works and free of all the past research flaws.
This is not an easy job because it requires sharp examination skills and analysis abilities. You have to perform this job because your university professors and members of dissertation board will never approve the task till they get satisfied with this part of your MSC dissertation writing.