Operating System Basics Questions and Answers
Operating System Basics questions with answers are among the most commonly asked in technical interviews and exams. This section covers core OS concepts like process management, memory allocation, file systems, and scheduling algorithms. Practicing programming questions and answers on operating systems helps strengthen your conceptual clarity and practical understanding of computer architecture. Frequently featured in GATE, TCS, Infosys, and Wipro placements, these MCQs provide a balanced mix of theoretical and applied knowledge. Clear explanations make this section an ideal resource for anyone preparing for system-related roles or competitive exams.
Operating System Basics
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563 questions
261. In soft real time tasks
- The dead line is always mandatory.
- The dead line is desirable butnot mandatory
- The results are indepedent of the time, when it took place.
- None of these
262. In real time scheduling: A: Static table driven approach, B: Static priority driven preemptive approach, C: Dynamic planning based approach; 1- A static analysis of feasible scheduler of dispatching is done and implemented. 2- A dispatching is done and assigns priorities to tasks. 3- Feasibility is determined at run time
- A-1, B-2, C-3
- A-2, B-3, C-1
- A-3, B-1, C-2
- None of these
263. Match the following I/O devices : A-Keybord, 1- Human readable, B- Disk and tape drives, 2- Communication, C- Moderms, 3-Machine readable
- A-1, B-3, C-2
- A-1, B-2, C-3
- A-3, B-2, C-1
- A-2, B-1, C-3
264. Arrange the following I/O device in increasing data rate Hard disk, Floppy disk, Key board
- Key Board, Floppy disk, Key board
- Floppy disk, Key, board, Hard disk
- Key board, Hard disk, Floppy disk
- Hard disk, Floppy disk, Key board
265. Resident set of process is
- Portion of a process that is actually in main memory at any time.
- Portion of a process that is actually in virtually memory at any time.
- A and b both true.
- None of these
266. Main memory is referred as
- Virtual memory
- Real memory
- A and B both
- None of these
267. Main memory is referred as
- Virtual memory
- Real memory
- A and B both
- None of these
268. Memory that is located on the disk either Hard or floppy is referred as
- Virtual memory
- Real memory
- Main memory
- None of these
269. The principle of locality states
- The program and data references within a process tend to cluster.
- The program and data references within a process do not tend to cluster.
- A process actually referred in virtual memory
- None of these
270. In Windows operating system the ________________ is the main screen area that one sees after he turn on a computer and log on to windows.
- Desktop
- Icons
- Taskbar
- None of these