Hello, here I am providing you the details of the books to refer for the CDAC entrance exam as under:

Books to refer:
Quantitative Aptitude & Reasoning
R. S. Aggrawal

Data Communication & Networking
CompTIA Network+ Study Guide (Todd Lammle)
Data communication and networking (Forouzan)

C Programming
Let Us C (Yashavant Kanetkar)
C++ OOP balguruswamy

Operating Systems
Operating System Principles (Silberschatz, Galvin, Gagne)

Computer Architecture
Computer Organization & Architecture (William Stallings)

Digital Electronics
Digital Design (Morris Mano)
Modern Digital Electronics (R. P. Jain)

Microprocessors
Microprocessor Architecture, Programming & Applications
with 8085 (Ramesh Gaonkar)
The Intel Microprocessor (Barry Brey)

Important dates:
Beginning of Online Registration and Application for C-CAT 08 May 2016
Closing of Online Registration & Application, and Payment of
Examination Fee for C-CAT 09 June 2016
Downloading of C-CAT Admit Cards 16 June to 23 June 2016
C-DAC’s Common Admission Test (C-CAT) 19 June 2016 / 26 June 2016
Announcement of C-CAT Ranks 07 July 2016
Online Selection of Courses and Centres (1st Counselling) 07 July – 12 July 2016
Declaration of 1st Round of Seat Allocation 14 July 2016
Last Date of Payment of first installment course fee for
candidates allocated seats through the 1st round 21 July 2016
Declaration of 2nd Round of Seat Allocation 26 July 2016
Online Selection of Courses and Centres (2nd Counselling) 26 July – 01 Aug 2016
Last Date of Payment of first installment course fee for candidates
allocated seats through the second round 01 Aug 2016
Declaration of Third Round of Seat Allocation
(based on 2nd Counselling) 05 Aug 2016
Last Date of Payment of first installment course fee for candidates
allocated seats through the 3rd round 10 Aug 2016
Last Date of Payment of Balance Course Fee &
Registration of Students at Training Centres 16 Aug 2016
Commencement of PG Diploma Courses 17 Aug 2016