Question Paper Of JNU MCA Entrance Exam

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[Rajkumar Agarwal]

Jawaharlal Nehru University (JNU), Delhi was established in 1969. It is one of the most prestigious universities across the country.

1. Which one of the following operations cannot be overloaded?
1. Subscripting operator
2. Function call operator
3. Membership operator
4. Assignment operator

2. Which of the following is correct?
1. 1 + i > 2 – i
2. 2 + i > 1 + i
3. 2 – i > 1 + i
4. None of these
3. The encoding scheme that uses only both polarities to represent binary 1 and 0 is
1. bi–phase
2. Bipolar
3. Polar
4. Unipolar

4. If the complex numbers sin x + icos2x and cosx – isin 2x are conjugate to each other, then x is equal to
1. Nπ
2. (n + ½) π
3. 0
4. None of these
5. Which of the following process models will be used to develop a software product for which critical requirements are poorly understood?
1. Waterfall
2. Throw–away Prototyping
3. Evolutionary Prototyping
4. Incremental
6. The coefficient of x99 in the expansion of (x – 1) (x – 2)…(x – 100) is equal to
1. 5050
2. 5000
3. – 5050
4. – 5000
7. In LRU page replacement algorithm, the pages to be replaced are taken from
1. The past knowledge
2. The future knowledge
3. The present knowledge
4. Depends on the page size of the processes

8. A system multiplexes 10 channels of capacity 128 kbps each into a channel of 1024 kbps capacity using synchronous
Time Division Multiplexing. The number of channels, system will be able to multiplex if it uses asynchronous time division multiplexing is
1. 18
2. 10
3. 15

9. The number of times the digit 3 will be written when listing the integers from 1 to 1 is
1. 269
2. 300
3. 271
4. 302

10. On your way to work, you have to drive through a busy junction where you may be stopped at traffic lights. The cycle of the traffic light is 2 minutes of green followed by 3 minutes of red. What is the expected delay in the journey, if you arrive at the junction at random time uniformly distributed over the whole 5 minute cycle is??
1. 9/10 minute
2. 3/5 minute
3. 1/5 minute
4. 3/2 minutes

JNU MCA Entrance test Paper







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