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

Total Questions: 100

11. In Distributed system, the capacity of a system to adapt the increased service load is called _________ .

Correct Answer: B. Scalability

12. In _________ disk scheduling algorithm, the disk head moves from one end to other end of the disk, serving the requests along the way. When the head reaches the other end, it immediately returns to the beginning of the disk without serving any requests on the return trip.

Correct Answer: D. C-SCAN

13. Suppose there are six files F1, F2, F3, F4, F5, F6 with corresponding sizes 150 KB, 225 KB, 75 KB, 60 KB, 275 KB and 65 KB respectively. The files are to be stored on a sequential device in such a way that optimizes access time. In what order should the files be stored?

Correct Answer: B. F4, F6, F3, F1, F2, F5

14. Which module gives control of the CPU to the process selected by the short-term schedular?

Correct Answer: A. Dispatcher

15. Two atomic operations permissible on Semaphores are ________ and _________ .

Correct Answer: D. wait, signal

16. Software does not wear-out in the traditional sense of the term, but software does tend to deteriorate as it evolves, because:

Correct Answer: C. Multiple change requests introduce errors in component interactions.

17. Software re-engineering is concerned with:

Correct Answer: C. Re-organising and modifying existing software systems to make them more maintainable.

18. Which of the following is not a key issue stressed by an agile philosophy of software engineering?

Correct Answer: D. Having a separate testing phase after a build phase.

19. What is the normal order of activities in which traditional software testing is organized?

(a) Integration Testing
(b) System Testing
(c) Unit Testing
(d) Validation Testing
Codes:

Correct Answer: B. (c), (a), (d), (b)

20. Which of the following testing techniques ensures that the software product runs correctly after the changes during maintenance?

Correct Answer: D. Regression Testing