Operating System Solved MCQs

Operating System MCQS

Operating System Solved MCQs for Computer Instructor B-17 | AJKPSC & PPSC Exam Preparation

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1. In a real-time operating system, ____________.

a. A task must be completed within its specified deadline

b. Process scheduling can occur only once

c. The kernel is unnecessary

d. All tasks share the same priority level

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2. Which of the following is not a part of the operating system?

a. Input/output control program

b. Job control program

c. Performance monitor

d. Supervisor

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3. A process can never be sure that a signal it has sent

a. has not been lost

b. has been sent

c. all

d. has which identifier

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4. The Virtual memory is:

a. A large main memory

b. A large secondary memory

c. An illusion of a large main memory

d. None

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5. Operating system is a collection of

a. Input-output devices

b. Software routines

c. Hardware components

d. All

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6. Which of the following is an example of a real time operating system?

a. process control

b. dos

c. lynx ms

d. windows xp

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7. The FCFS scheduling algorithm poses significant challenges for ____________.

a. Multiprogramming systems

b. Multiprocessor systems

c. Time-sharing systems

d. Operating systems

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8. CPU scheduling is the basis of:

a. larger memory sized systems

b. multiprocessor systems

c. multiprogramming operating systems

d. none

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9. What does OS X has?

a. monolithic kernel

b. monolithic kernel with modules

c. hybrid kernel

d. microkernel

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10. Allocation of memory to each process according to its size is known as :

a. equal allocation algorithm

b. All

c. split allocation algorithm

d. proportional allocation algorithm

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11. Which one of the following is not a real time operating system?

a. RTLinux

b. QNX

c. Palm OS

d. VxWorks

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12. In which type of operating system can a misbehaving system component be easily terminated/killed at runtime?

a. All

b. Layered OS

c. Microkernel OS

d. Monolithic OS

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13. If the total working set sizes exceed the available frames, ____________.

a. Memory overflow occurs

b. The operating system chooses a process to suspend

c. The system experiences a crash

d. The process encounters a failure

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14. To recover from failures in network operations, _____________ information may be retained.

a. Operating system

b. Stateless

c. IP address

d. State

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15. What are the features of a stack-based Intrusion Detection System (IDS)?

a. It is designed to analyze a specific sequence of packets

b. The audit information is recorded by the host operating system

c. These systems are tightly integrated with the TCP/IP stack to monitor packets

d. It represents typical network usage through noise characterization

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16. Which is not application software?

a. photoshop

b. page maker

c. windows nt

d. winword xp

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17. FIFO scheduling is

a. Preemptive scheduling

b. Non-preemptive scheduling

c. Fair-share scheduling

d. Deadline scheduling

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18. On systems with multiple operating systems, the choice to load a specific one is made by?

a. Bootstrap

b. Process control block (PCB)

c. File control block

d. Boot loader

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19. To access the services of the operating system, the interface is provided by the…..?

a. Assembly instructions

b. Library

c. System calls

d. API

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20. The _______ program sets up all components of the system, including CPU registers, device controllers, and main memory contents, before starting the operating system.

a. RAM

b. Main

c. Bootloader

d. Bootstrap

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Operating System Solved MCQs for Computer Instructor B-17 | AJKPSC & PPSC Exam Preparation

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