U.G.C. NET Exam. June 2023 Paper-II (COMPUTER SCIENCE)

Total Questions: 80

41. Which of the following is not a mutation operator in a genetic algorithm?

(A) Random resetting    (B) Scramble
(C) Inversion                   (D) Difference
Choose the correct answer from the option given below :

Correct Answer: (d) D only
Solution:

Genetic Algorithms (GA) are adaptive heuristic search algorithms that belong to the larger part of evolutionary algorithms. In each generation chromosomes undergo mutation and crossover and then selection to produce a better population whose candidates are nearer to our desired solution. Mutation operator is a unary operator and it needs only one parent to work on. It does so by selecting a few genes from our selected chromosome and apply the desired algorithm.
There are 5 type of mutation operator in a genetic algorithm-
(i) Bit flip mutation
(ii) Random Resetting Mutation
(iii) Swap Mutation
(iv) Scramble Mutation
(v) Inversion mutation

42. Consider the following table of arrival time and burst time for three processes P0, P1 P2:

Correct Answer: (b) 3.67 ms
Solution:

43. Which is not the component of the natural language understanding process?

Correct Answer: (d) Meaning analysis
Solution:

Natural language understanding (NLU) is a branch of Artificial Intelligence (AI) that uses computer software to understand input in the form of sentences using text or speech. NLU enables human-computer interaction by analyzing language versus just words.
There are five components of the natural language understanding process.
(i) Morphological and lexical Analysis
(ii) Syntactic Analysis
(iii) Semantic Analysis
(iv) Discourse Integration
(v) Pragmatic Analysis

44. Consider a hash table of size seven with starting index zero and a hash function (6x + 3) mod 4. Assuming the hash table is initially empty. Which of the following is the content of the table when the sequence 1, 3 8, 10,5, is inserted into the table using closed hashing? Here"_____" denotes an empty location in the table.

Correct Answer: (d) __,1,3,8,10,5,__
Solution:

45. A three dimensional array C++ is declared as int A [a] [b] [c]. Consider that array elements are stored in row major order and indexing begin from 0. Here the address of an item at the location A [r] [s] [t] computed in terms of word length w of an integer is

Correct Answer: (b) & A[0] [0] [0] + w (b*c*r+c*s+t)
Solution:

46. Match List I with List II

Correct Answer: (b) A-III B-IV C-II D-I
Solution:

47. Match List I with List II

Correct Answer: (c) A-IV B-III C-II D-I
Solution:

48. Consider following statements:

Correct Answer: (e) *
Solution:

Among the four given sentences. Only sentence D is correct which is not given in the option. So, this question has beend dropped by UGC.

49. Consider a popular sports news site. At a given moment, 20,000 concurrent users submit a request (a transaction, T) one every 2 minutes on average. Each transaction requires the webapp to download a new article that on average has 3k bytes in length. What is the throughput?

Correct Answer: (b) 4 megabits per second
Solution:

50. How many integral solutions are there to x + y + z + w = 29, where x ≥ 1,y ≥ 2, z ≥ 3 and w ≥ 0?

Correct Answer: (b) 2600
Solution: