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
191. Memory buffer register (MBR) contains
- Data that is to be written into memory
- A particular I/O modue and the processor
- Exchange data between I/O module and the processor and the processor
- The instruction most recently fetched
192. I/O modules move data
- Between external environment and computer
- In the computer main memory
- In Processors
- None of these.
193. I/O OBR (I/O Buffer register ) is
- Used for the exchange of data between an I/O module and the processor
- Specifies particular I/O device
- (A) and (B) both true
- (A) and (B) both alse
194. User-visible register
- Enables machnine language programmer to minimize memory preference by optimizing register use.
- Enables assembly language programmer to minimizing main memory reference by optimizing reguster use.
- A and B both true
- A and B both false
195. The operations of the processor are supervised by
- Control and Status register
- Data register.
- Address register.
196. User-Visible register Which of the following do not support GUI (Graphical User Interface)
- DOS
- WINDOWS
- Linux
- None of these
197. The MS-DOS and operating system and single threads
- Multiple user process and single thread
- Multiple user process and single thread
- Single user process and single thread
- Multiple user process and multiple threads.
198. The UNIX, an operating system supports
- Multiple user processes and single thread per process
- Multiple user process and multiple threads per process
- Single user process and single thread per process
- Singe user process and multiple threads per process
199. The Java run time environment is an example of
- Single user process with multiple threads
- Multiple user process with single thread per process.
- Multiple user process with multiple threads per process.
- None of these
200. The Windows 2000, operating system supports
- Multiple user processes with single threads per process
- Multiple processes with multiple thread per process
- Single process with single thread
- Single process with multiple threads