Operating Systems
Hard Difficulty
Operating Systems: Challenge Combination - Hard Mixed Mock
Independent hard practice covering FCFS and Round-Robin Scheduling; Critical Sections; Starvation and Livelock; Demand Paging and Page Faults; Input-Output and Interrupts; Signals and Process Termination. Learning focus: move between the listed topic areas, identify the relevant method and maintain accuracy under a defined practice time budget. Blueprint: 60 single-best-answer MCQs at one mark each, 100 minutes and a practice pass target of 36/60. Timings and thresholds are editorial practice settings, not an official examination scheme.
Time Limit
100 mins
Questions
15 Qs
Total Marks
60
Negative Marking
-0
Official Candidate Instructions
- • Duration: The test runs strictly for 100 minutes. The server timer will automatically submit your exam when time expires.
- • Marking Scheme: Each correct response awards 1.0 mark. Each incorrect response incurs a deduction of 0 marks. Unattempted questions carry zero marks.
- • Review Palette: You can mark questions for review and return to them anytime before final submission.
- • Passing Threshold: Minimum qualifying score is 36 marks.
Resumable session: your progress is safely saved automatically.
Top Test Scorers
Top candidate percentiles for this simulation (pseudonymized for candidate privacy).
| Rank | Candidate | Score | Accuracy | Time Taken | Date |
|---|---|---|---|---|---|
| 1 | Candidate #8837 | 14 / 15 (93%) | 100% | 17m 21s | 10/27/2026 |
| 2 | Candidate #2707 | 8 / 15 (53%) | 57% | 9m 43s | 10/27/2026 |