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
291. Memory buffer register (MBR) contains
- Data that is to be written into memory
- A particular I/O device
- Exchange data between I/O module and the processor.
- The instruction most recetly fetched.
292. I/O modues move data
- Between external environment and computer
- In the computer main memory.
- In Processors.
- None of these
293. I/O OBR (I/O Buffer register) is
- Used for exchange of data between and I/O module and the processor
- Specifies particular I/O device
- (A) and (B) both true
- (A) and (B) both false
294. User-visible register
- Enables machine language programmer to minimize main memory reference by optimizing register use.
- Enables assembly language programmer to minimize main memory reference by optimizin register use.
- A and B both true.
- A and B both false.
295. The operations of the processor are supervised by
- Control and Status register
- Data register
- Address register.
296. User-visible register whch of the following do not support GUI (Graphical User Interface)
- DOS
- WINDOWS
- Linux
- None of these
297. In the given operating system match the correct
- Thread
- Process
- The unit of resource ownership.
- The unit of dispatching
298. The MS-DOS an operating system supports
- Single user process and multiple threads
- Multiple user process and single thread
- Single user process and single thread
- Multiple user processes and multiple
299. The UNIX, an operating system supports
- Multiple user processes and single thread per process
- Multiple user processes and multiple threads per process.
- Single user process and single thread per process
- Single user process nd multiple threads per process
300. The java run time environment is an exampe of
- Single user process with multiple threads
- Multiple user processes with single thread per process.
- Multiple user processes with mutiple threads per process.
- None of these.