U.G.C. NET Exam. June, 2020 Paper II (COMPUTER SCIENCE & APPLICATIONS)

Total Questions: 100

1. The number of position integers not exceeding 100 that are either odd or the square of an integer is _____ .

Correct Answer: (c) 55
Solution:

2. How many ways are there to pack six copies of the same book into four identical boxes. Where a box can contain as many as six books?

Correct Answer: (d) 9
Solution:

Here there are six copies of the same book into four. Identical boxes (Same box).
We will enumerate all ways to pack the books for each way to pack the books we will list the number of books in the box with the largest numbers of books, followed by the numbers of books in each box containing at least one book, in order to decreasing the number of books in a box.
So, the number of way is 9.

3. Which of the following pairs of propositions are not logically equivalent?

Correct Answer: (d) ((p∧q → r)) and ((p → r) ∧ (q → r))
Solution:

The above truth table is not equivalent.
Hence the above statement is true, logically not
equivalent.
Hence, the correct answer option d.

4. Consider the following linear programming

Correct Answer: (d) 8
Solution:

5. Consider a machine with a byte addressable main memory of 216 bytes and block size of 8 bytes. Assume that a direct mapped cache consisting of 32 lines used with this machine. How many bits will be there in Tag, line and word field of format of main memory addresses.

Correct Answer: (a) 8, 5, 3
Solution:

6. The following program is stored in memory unit of the basic computer. What is the content of the accumulator after the execution of program? (All location numbers listed below are in hexadecimal)

Correct Answer: (d) 0215H
Solution:

⇒ (9CE2)16 = (1001 1100 1110 0010)₂
1's complement of (9CE2)16
= (0110 0011 0001 1101)₂ = (631 D)16
(631 D)16 and(1235)16 = (0215)16
Hence the correct answer is 0215 H

7. A non-pipeline system takes 50ns to process a task. The same task can be processed in six segment pipeline with a clockcycle of 10ns. Determine approximately the speedup ration of the pipeline for 0 tasks

Correct Answer: (b) 4.95
Solution:

8. Answer the following question

Correct Answer: (d) 11
Solution:

If one solve the quadratic equation,

9. Consider the following pseudo-code fragment, where a and b are integer variables that have been initialized.

Correct Answer: (d)
Solution:

10. In HTML <map> tag is used for

Correct Answer: (b) defining clickable region in an image
Solution: