Operating System MCQ

Operating System MCQ

Operating System MCQ, Introduction to Operating System MCQ, Multiple Choice Questions on Operating System, Basic Computer Engineering MCQ, Engineering MCQ, Operating System MCQ with answers

Introduction to Computer MCQ

Multiple-Choice Questions

Q.1. The operating system which is dependent on the system operator for executing the jobs and is resident in the ROM is

  • real-time operating system 
  • distributed operating system   
  • batch processing system  
  • multitasking operating system 

Answer: batch processing system

Q.2. Which of the following is a non-preemptive scheduling algorithm?

  • Shortest job first
  • Round robin
  • First come first serve
  • Shortest remaining time first

Answer: First come first serve

Q.3. The operating system that allows execution of multiple programs simultaneously is called as

  • real-time operating system  
  • batch processing operating system  
  • multiprocessor operating system  
  • multitasking operating system  

Answer: multitasking operating system

Q.4. Which of the following schedulers is also known as job schedulers?

  • CPU scheduler
  • Long-term scheduler
  • Mid-term scheduler
  • None of the above

Answer: Long-term scheduler

Q.5. The batch file uses the extension

  • .bat
  • .exe
  • .com
  • .bmp

Answer: .bat

Q.6. Which of the following is an example of non-contiguous memory allocation methods?

  • Best fit
  • Paging
  • Worst fit
  • First fit

Answer: Paging

Q.7. The program becomes a job in which of the following states?

  • New
  • Ready
  • Waiting
  • Running

Answer: Ready

Q.8. The job becomes a process in which of the following states?

  • New
  • Ready
  • Waiting
  • Running

Answer: Running

Q.9. Which of the following symbol is used in UNIX to represent the root directory?

  • /
  • #
  • *
  • ?

Answer: /

Q.10. Which of the following is represented by using process control block?

  • Swapping
  • Program
  • Process
  • Spooling

Answer: Process

Q.11. Which one of the following is a necessary condition for the deadlock to occur?

  • Hold and wait
  • Mutual exclusion
  • No preemption
  • All of the above

Answer: All of the above

Q.12. Which of the following scheduling algorithms is used for the time-sharing operating system?

  • First come first serve
  • Round robin
  • Shortest job first
  • Shortest time remaining first

Answer: Round robin

Q.13. Which of the following are only a single user and single-tasking operating system?

  • UNIX
  • DOS
  • LINUX
  • Windows 7

Answer: DOS

Q.14. Which of the following functions is not provided by the operating system?

  • Process management
  • Memory management
  • File management
  • None of the above

Answer: None of the above

Q.15. Which of the following is not an operating system?

  • IBM PC DOS
  • IBM OS2
  • IBM DB2
  • None of the above

Answer: IBM DB2

Q.16. Which of the following provides complete information about the process?

  • Process state
  • Process control block
  • Process scheduling
  • Process synchronization

Answer: Process control block

Q.17. The operating system is a

  • system software  
  • application software  
  • compiler  
  • hardware device 

Answer:

Q.18. Which of the following is the first operating system implemented in C?

  • DOS
  • UNIX
  • Windows
  • LINUX

Answer: UNIX

Q.19. Which of the following symbol characterizes the replacement for multiple characters?

  • ?
  • #
  • /

Answer: *

Q.20. Which of the following scheduler is also known as process schedulers?

  • CPU scheduler
  • Job scheduler
  • Long-term scheduler
  • Mid-term scheduler

Answer: CPU scheduler

Q.21. Which of the following scheduler is responsible for assigning the CPU to the process?

  • Short-term scheduler
  • Long-term scheduler
  • Mid-term scheduler
  • None of the above

Answer: Short-term scheduler

Q.22. The mid-term scheduler is responsible for

  • moving the process from running state to waiting state  
  • moving the process from ready state to waiting state  
  • moving the process from new state to ready state  
  • moving the process from ready state to running state  

Answer: moving the process from running state to waiting state

Q.23. When the CPU is allotted to the process, then the state of the process would be

  • new  
  • ready 
  • running  
  • terminated  

Answer: running

Q.24. The ‘?’ is the wildcard used for

  • one character replacement
  • multiple  character replacement
  • no character replacement 
  • asking a question  

Answer: one character replacement

Q.25. Which of the following is used to concatenate the output of one command as input to the next command?

  • Input redirection
  • Output redirection
  • Spooling
  • Pipe

Answer: Pipe

Q.26. Which of the following is used to send the output to a file?

  • >
  • >>

Answer:  >

Q.27. Which of the following is used to append the data to the end of the existing file?

  • >
  • >>

Answer: >>

Q.28. Which of the following commands are embedded in the COMMAND.COM file?

  • Internal
  • External
  • Disk
  • Script

Answer: Internal

Q.29. Which of the following commands are also known as a non-resident command?

  • Internal
  • External
  • Disk
  • Script

Answer: External

Q.30. Which command in DOS is used to display the contents of the existing file?

  • type
  • var
  • vol
  • fdisk

Answer: type

 Q.31. Which command is used to change the permission of access of a file or directory in UNIX?

  • chmod
  • chsdsk
  • filter
  • ps

Answer: chmod

Q.32. Which of the following command is used to display the specified number on the first line? 

  • head 
  • tail
  • ls
  • pwd 

Answer: head

Q.33. Which of the following is an access mode permission in UNIX operating system?

  • r
  • w
  • x
  • a

Answer: a

Q.34. Which interface allows entering the command at the prompt?

  • Command line
  • Graphical user
  • Menu
  • None of the above

Answer: Command line

Q.35. Which of the following provides an interface between the shell and the hardware in UNIX?

  • Shell
  • Kernel
  • System utilities
  • Application programs

Answer: Kernel

Q.36. Compaction is a solution for

  • internal fragmentation 
  • external fragmentation 
  • swapping  
  • paging  

Answer: external fragmentation

Q.37. “Worst fit” method is used to allocate the

  • best suited hole to the process  
  • first available and suited hole to the process
  • largest available hole to the process 
  • none of the above     

Answer: largest available hole to the process

Q.38. Which of the following memory management schemes does not support multitasking?

  • Single contiguous memory allocation
  • Fixed partition of memory space
  • Dynamic partition of memory space
  • Paging

Answer: Single contiguous memory allocation

Q.39. Which of the following creates the problem of external fragmentation?

  • Dynamic partition of memory space
  • Fixed partition of memory space
  • Paging
  • Virtual memory

Answer: Dynamic partition of memory space

Q.40. Which of the following is used to search the string in the given specified file?

  • grep
  • ps
  • pwd
  • type

Answer: grep

Q.41. Which of the following is a command interpreter?

  • Shell
  • Kernel
  • System utility
  • None of the above

Answer: Shell

Q.42. Which of the following is a mainframe operating system?

  • OS/390
  • Windows 2000
  • Windows XP
  • Windows NT

Answer: OS/390

Q.43. Which of the following is a real-time operating system? 

  • Windows 2000
  • QNX
  • Windows XP
  • Windows NT 

Answer: QNX

Q.44. Which of the following is a mainframe operating system? 

  • UNIX 
  • DOS 
  • PalmOS 
  • Windows XP

Answer: PalmOS

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