Hello Shreya,
Syllabus for VITMEE exam for MCA is :-
Mathematics
Data structure
Database Management System
Operating System
Programming in C
Computer architecture
Logical Reasoning
and English
So there wll be no difficulty if you have read it from before else you have to start as fast as possible.
You can refer to NPTEL site for more informaton and concept.There are also other sites for GATE which have nearly same syllabus. There you can find MCQs and you can start Practice.
if you have enough time then you can take procedure and step by step daily learning.
for more details:-
https://www.careers360.com/exams/vitmee
Good Luck!
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