PGT Computer Science (Level-3), (HTET Practice MCQs) (Part-III)

Total Questions: 100

21. Match the following:

  List A (Logic Family)  List B (Characteristics)
 (a) TTL (i) High component density
 (b) ECL (ii) Low power consumption
 (c) MOS (iii) Evolution of "diode-transistor-logic"
 (d) CMOS (iv) High speed digital circuits

Codes:

 Option (a) (b) (c) (d)
 A. (iii) (ii) (i) (iv)
 B. (i) (iv) (iii) (ii)
 C. (iii) (iv) (i) (ii)
 D. (i) (ii) (iii) (iv)
Correct Answer: C.

22. Match the following:

  List A (Concepts)  List B (Definitions/Mechanisms)
 (a) Foreign keys (i) Domain constraint
 (b) Private key (ii) Referential integrity
 (c) Event control (iii) Encryption action model
 (d) Data security (iv) Trigger

Codes:

 Option (a) (b) (c) (d)
 A. (iii) (ii) (i) (iv)
 B. (ii) (i) (iv) (iii)
 C. (iii) (iv) (i) (ii)
 D. (i) (ii) (iii) (iv)
Correct Answer: B.
Solution:θ

23. When an array is passed as a parameter to a function which of the following statements is correct?

Correct Answer: A. The function can change values in the original array

24. Suppose you want to delete the name that occurs before "Vivek" in an alphabetical listing. Which of the following data structures shall be most efficient for this operation?

Correct Answer: B. Doubly linked list

25. What is the worst case running time of Insert and Extract-min, in an implementation of a priority queue using an unsorted array? Assume that all insertions can be accommodated.

Correct Answer: A. θ(1), θ(n)

26. Trace the error:

Correct Answer: C. Syntax error

27. Match the following:

  List A (Functions)  List B (Descriptions)
 (a) calloc( ) (i) Fres previously allocated space
 (b) free( ) (ii) Modifie previously allocated space
 (c) malloc( ) (iii) Allocates space for array
 (d) realloc( ) (iv) Allocates requested size of space

Codes:

 Option (a) (b) (c) (d)
 A. (iii) (i) (iv) (ii)
 B. (iii) (ii) (i) (iv)
 C. (iii) (iv) (i) (ii)
 D. (iv) (ii) (iii) (i)
Correct Answer: A.

28. Binary symmetric channel uses

Correct Answer: A. Half duplex protocol

29. Hamming distance between 100101000110 and 110111101101 is

Correct Answer: D. 6

30. Given code word 1110001010 is to be transmitted with even parity check bit. The encoded word to be transmitted for this code is

Correct Answer: A. 11100010101