On your concern I will tell some tips to prepare for CDAC Entrance Exam and will also get the syllabus of exam.

Here I’m telling you some tips

Always go through the syllabus

Try to solve exam papers as much as you can

Prepare notes for important topics

Sleep well for at least 5 to 6 hours

GO through reference books

Here is the syllabus

Computing Fundamentals
Evolution of Computers
Data Communications and Computer Networking
Computer Organisation
Flowcharts
Numerica Systems
Binary Arithmetic
Boolean Algebra abd Logic Circuits
Computer Generations
Operating System
File Organisation
Primary and Secondary Storage
Input and Output Devices
Fundamentals Of Programming
Algorithms
Arrays - single and multidimensional
File Orgranisations

C Programming
Introductory Concepts
Operator and Expressions
Data Input and Output
Functions
Arrays
Pointers
Structures and Unions
Operator and Expressions
Trees
Stack
Queues
C Fundamentals
Statements (control, conditional, looping)
Linked Lists

Object Oriented Programming
Objects
Inheritance
Classes
Abstract Classes
Polymorphism
Reusability