Interview experience
CDAC Interview Questions
Overview
Section titled “Overview”CDAC is a government R&D organization whose Project Engineer/Associate hiring runs on its own recruitment written exam and interview - a genuinely different process from C-CAT, which is only the entrance test for its PG-Diploma training courses.
CDAC interview process at a glance
Section titled “CDAC interview process at a glance”| Round | Duration | What they test |
|---|---|---|
| Eligibility & academic screening | - | Qualification, category, and notification-specific eligibility criteria |
| Recruitment written exam | ~3 hours | English, reasoning, aptitude, general awareness, and technical MCQs (~100 questions) |
| Technical/Personal Interview | 20-30 min | Domain fundamentals, project/thesis discussion, fit for the role |
| Document Verification | Varies | Certificates, category, and experience proof checked before joining |
Eligibility & academic screening
Section titled “Eligibility & academic screening”Before the written exam, CDAC screens applications against the notification’s qualification, discipline, and category criteria. This isn’t a test - it’s a filter on your application details, so accuracy on the application form matters.
Common questions
- N/A - this stage checks eligibility against the notification, not a test with questions
Recruitment written exam
Section titled “Recruitment written exam”CDAC’s own written exam for employment (distinct from C-CAT, which is only for its training-course admissions) is a roughly 3-hour, ~100-question objective paper spanning English, reasoning, quantitative aptitude, general awareness, and technical MCQs in your specialization.
Common questions
- Quantitative aptitude and logical reasoning at a standard competitive-exam level
- English comprehension and grammar
- General awareness, including current developments in computing/technology
- Core technical MCQs at B.E./B.Tech level in your discipline (CS/IT: data structures, OS, networks, DBMS; Electronics: digital circuits, microprocessors)
Technical/Personal Interview
Section titled “Technical/Personal Interview”Shortlisted candidates go through a single interview covering core subject fundamentals and a detailed discussion of your final-year or M.Tech project/thesis, often connected back to CDAC’s active research areas.
Common questions
- Core technical questions in your specialization (data structures/OS/networks for CS/IT; digital electronics/embedded systems for ECE)
- Detailed walkthrough of your final-year or M.Tech project/thesis - methodology, results, what you’d change
- How does your project or research interest connect to CDAC’s work in HPC, AI, or cybersecurity?
- Why CDAC over a private product or service company?
Sample answer frameworks are on the CDAC HR interview questions page.
Document Verification
Section titled “Document Verification”A final administrative stage where certificates, category proof, and experience documents are checked before a formal offer. Candidates sometimes overlook this step, but incomplete or mismatched documents can hold up or cost an offer even after clearing the interview.
Common questions
- N/A - this stage verifies documents, not a test with questions
Why C-CAT and CDAC recruitment are different products
Section titled “Why C-CAT and CDAC recruitment are different products”It’s easy to conflate the two because both carry the CDAC name, but C-CAT is purely an admission test for CDAC’s own PG-Diploma training courses (like PG-DAC and PG-DITISS) - it has nothing to do with getting hired at CDAC. CDAC’s employment recruitment for Project Engineer, Project Associate, and Scientist-level posts runs its own separate written exam and interview. Confusing the two leads candidates to prep for the wrong test entirely, so check whether the notification you’re applying to is a training-course admission (C-CAT) or an employment recruitment drive before you start preparing.
Frequently asked questions about CDAC interviews
Section titled “Frequently asked questions about CDAC interviews”What is CDAC’s recruitment process?
CDAC (Centre for Development of Advanced Computing) hires for Project Engineer/Associate and Scientist-level roles through its own recruitment written exam, not through the C-CAT test (which is a separate admission test for CDAC’s PG-Diploma training courses like PG-DAC): 1. Eligibility and academic-record screening against the notification. 2. A written exam - typically ~100 objective questions across English, Reasoning, Aptitude, General Awareness, and Technical subjects for your discipline, around 3 hours. 3. A Technical/Personal Interview on domain fundamentals and your project work. 4. Document verification - certificates, category, and experience proof checked before joining.
Is C-CAT the same test used for CDAC job recruitment?
No - this is a common mix-up. C-CAT (CDAC Common Admission Test) is the entrance exam for admission into CDAC’s own PG-Diploma training courses (PG-DAC, PG-DITISS, and similar), not for CDAC’s own employment recruitment. When CDAC hires Project Engineers, Project Associates, or Scientists as an employer, it runs a separate recruitment written exam and interview - candidates and course graduates alike still need to go through that employment process to get hired at CDAC itself.
What questions are asked in the CDAC recruitment written exam and interview?
The written exam covers English, reasoning, quantitative aptitude, general awareness, and technical MCQs at B.E./B.Tech level in your specialization (CS/IT/Electronics, etc.). The interview goes deeper into core subject fundamentals and your final-year or M.Tech project/thesis, often tied to CDAC’s active research areas like HPC, AI, and cybersecurity.
How many rounds are there in CDAC recruitment?
Typically three effective stages: academic/eligibility screening, a written exam, and a Technical/Personal Interview, followed by document verification for selected candidates. There’s no separate HR round - motivational and fit questions are usually folded into the same interview as the technical discussion.
How should I prepare for a CDAC interview?
Prepare aptitude, reasoning, and English for the written exam, revise core fundamentals of your specialization (CS/IT/Electronics) at B.E./B.Tech depth, and be ready to discuss your final-year or M.Tech project/thesis in detail, since interviewers often connect it to CDAC’s ongoing research areas. Also keep your certificates and category documents ready, since document verification is a real, often overlooked stage.
Does completing CDAC’s PG-DAC course guarantee a job at CDAC?
No. PG-DAC and CDAC’s other PG-Diploma courses are separate training programmes with their own placement support (a Common Campus Placement Programme where outside companies visit CDAC centres) - completing one doesn’t automatically place you at CDAC as an employer. To work at CDAC itself, you still apply through its regular Project Engineer/Associate recruitment written exam and interview like any other candidate.