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

Total Questions: 100

71. A virtual memory based memory management algorithm partially swaps out a process. This is an example of

Correct Answer: C. medium term scheduling

72. Assuming that the disk head is located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O block requests are 98, 37, 14, 124, 65, 67:

Correct Answer: D. 321

73. Let the page fault service time be 10 milli-second(ms) in a computer with average memory access time being 20 nanosecond(ns). If one page fault is generated for every 10⁶ memory accesses, what is the effective access time for memory?

Correct Answer: C. 30 ns

74. Consider the following UNIX command:

sort <in> temp; head - 30 <temp; rm temр
Which of the following functions shall be performed
by this command?

Correct Answer: C. Sort, taking the input from "in" and writing the output to "temp" then prints 30 lines from temp on terminal. Finally "temp" is removed.

75. The mv command changes

Correct Answer: C. the directory entry

76. The Software Maturity Index (SMI) is defined as

Correct Answer: A. SMI approaches 1

77. Match the following:

 List A (Models)  List B (Applications)
 (a) Watson-Felix model (i) Failure intensity
 (b) Quick-Fix model (ii) Cost estimation
 (c) Putnam resource allocation model (iii) Project planning
 (d) Logarithmic-Poisson Model (iv) Maintenance

Codes:

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

78. __________ is a process model that removes defects before they can precipitate serious hazards.

Correct Answer: C. Cleanroom software engineering

79. Equivalence partitioning is a ____________ method that divides the input domain of a program into classes of data from which test cases can be derived.

Correct Answer: B. Black-box testing

80. The following three golden rules:

(i) Place the user in control
(ii) Reduce the user's memory load
(iii) Make the interface consistent are for

Correct Answer: B. Good interface design