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
461. Application programming interface is
- A set of function and call programs that allows clients and servers to intercommunicate.
- A database, where information access is limited to the selection of rows that satisfy all search criteria.
- A computer usually a high powered work station.
- None of these.
462. If in a computer networking environment when all the processing is done on single computer can be referred as
- Host based processing
- Server based proessing
- Client based processing
- None of these
463. In three tier client/server architecture application software match the following: A- user machine, 1-Client, B- Middle-tier, 2-Application server, C-Backend server, 3-data servers.
- A -1, B - 2, C - 3
- A - 1, B - 3, C - 2
- A - 2, B - 1, C - 3
- A - 3, B - 2, C - 1
464. UNIX was developed by
- Bell labs for PDP-7 in 1970
- Microsoft for IBM computers
- Macintosh
- None of these
466. In UNIX process management, the system process runs in
- Kernel mode only
- Kernel and user mode both
- User mode only
- None of these .
467. In UNIX process management, the user processes runs in
- Kernel mode only
- Kernel and user mode both
- User mode only
- None of these
468. In UNIX process management, the following is true
- User process enters kernel mode by issuing a system call when interrupt occurs.
- kernel mode is executed in user process.
- User process enters kernel mode with out issuing a system call when interrupt occurs.
- None of these
470. In process management of UNIX system. which of the following process states are running states in respect of whether the process is executing in user or kernel mode
- Ready to run (in memory)stage
- Ready to run (in swappe(D) state
- Preempted state
- A and C are true