I think you don't get it exactly. The syllabus for C-DAC c- cat is as follows :
CDAC C-CAT Syllabus 2019- Reference Books
Section

Topic

Reference books

A

English

Any High School Grammar Book (e.g. Wren & Martin)

Quantitative Aptitude & Reasoning

Barron’s New GRE 2016

Quantitative Aptitude Fully Solved (R. S. Aggrawal)

Quantitative Aptitude (M Tyara)

B

Computer Fundamentals

Foundations of Computing (Pradeep Sinha & Priti Sinha)

Data Communication & Networking

Data Communication & Networking (Forouzan)

C Programming

Let Us C (Yashavant Kanetkar)

C Programming Language (Kernighan & Ritchie)

Data Structures

Data Structures Through C in Depth (S. K. Srivastava)

Operating Systems

Operating System Principles (Silberschatz, Galvin, Gagne)

OOP Concepts

Test Your C ++ Skills (Yashavant Kanetkar)

C

Computer Architecture

Computer Organization & Architecture (William Stallings)

Digital Electronics

Modern Digital Electronics (R. P. Jain)

Digital Design (Morris Mano)

Digital Design: Principles & Practices (John Wakerly)

Microprocessors

Microprocessor Architecture, Programming & Applications with 8085 (Ramesh Gaonkar)

The Intel Microprocessor (Barry Brey)

( I can't upload a doc. Or image here, that's why I have to copy the content)

Hello mam
I am btech final year student from electrical and electronics branch mam i want to join cdac course pls tell me about is it benificial forme or when next form of cdac exam is open pls