C-DOT recruitment process for Research and Development

The Centre for Development of Telematics ( C-DOT) is a development centre of the government of India, that has full rights and flexibility to work for the requirements and development for the advancements in Indian network for telecommunication. C-DOT was established in 1984 to design, develop and maintain the digital exchanges. C-DOT works to meet the telecom needs of the nation by putting an exertion on the telecom technology products and their maintenance.

C-DOT recruitment is done at the basic level, both for Research and Development and the maintenance level though managed by Government of India and its policies. The employment is based on the candidate’s background, interest and the requirements of the organization. For the research field, C-DOT hires engineering professionals from the field of Computer science Engineering or Electronics and Communication Engineering.

It is done through

- Campus Interviews
- Offering good rank holders directly
- All India tests or advertisements.

C-DOT conducts written tests and Interviews for hiring the professionals.

The written test paper consists of two parts.

- First part consists of Aptitude test: The duration is half an hour for this part. The paper consists of puzzles, time and work, verbal and non verbal reasoning, questions from ages, numbers etc..

- Second part consists of Technical paper: The duration is one and half (1 1/2) hour for this part.
For Computer Science and Engineering candidates, the paper consists of the subjects like

- C
It covers approximately 30 questions, that are based on command lines, loops, pointers, structures etc.

- C++
It covers nearly 20 to 30 questions that may be objective or theoretical type. The topics covered in this subject are mainly overloading, virtual class concept, OOPS etc.

- UNIX
It covers nearly 15 questions. The questions are based on mainly Complex commands.

- PERL
It covers nearly 5 simple questions.

For Electronics and Communication Engineering candidates, the paper consists of the subjects like

- Communication

It covers nearly 15-20 questions based on digital communication. The questions are asked from the topics like PCM, FSK, DPSK, etc. The questions may also be asked from analog communication. The topics usually covered are Analog Modulation, Frequency Modulation etc. The questions may also arise from Autocorrelation and Optical Fibre Communication. The questions may be of objective as well as numerical type.
- Analog Electronics

It is covered in nearly 20 to 30 questions. The questions are based on the topics such as transistors, electron – hole movements, the numerical on currents through the transistors, etc.
- Digital Electronics

The subject is covered in nearly 10 questions. The questions may be based on the topics such as Half adder, Full adder, 4 Bit adders, the number of gates required for them, Boolean Equations or the input and output relations of various digital circuits.
- Microwave Engineering

It is covered in nearly 10 questions. The questions are based on Waveguides, Radars etc.
- C language

These are very simple logic based questions asked on binary search etc.

Interview is conducted for the candidates scoring good marks in the written test. The interview consists of some basic questions, based on the topics covered in the written tests.

For e.g.

They might give you a digital circuit and the candidate will have to give the implementation details of the circuit in the prescribed duration.
The digital counters are also importantly covered in the interviews.
Analog circuits, RC circuits and their implementations might also be asked.
The questions may be based on analog communication. The question may arise from a simple block diagram to low pass filters, Band pass filters and their analysis.
Another question might be from Network Analysis where the question might come up about various windowing techniques.

The interviewer may also ensure the candidate’s latest updates by asking about the advancements in the technical fields.