Basic Operating System MCQ

Basic Operating System MCQ
111. In memory management , a technique called as paging, physical memory is broken into fixed-sized blocks called ___________.
  • Pages
  • Frames
  • Blocks
  • Segments
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112. The state of a process after it encounters an I/O instruction is __________.
  • Ready
  • Blocked/Waiting
  • Idle
  • Running
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113. In one of the deadlock prevention methods, impose a total ordering of all resource types, and require that each process requests resources in an increasing order of enumeration. This voilates the _______________ condition of deadlock
  • Mutual exclusion
  • Hold and Wait
  • Circular Wait
  • No Preemption
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114. Which of the following file name extension suggests that the file is Backup copy of another file ?
  • TXT
  • COM
  • BAS
  • BAK
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115. The degree of Multiprogramming is controlled by
  • CPU Scheduler
  • Context Switching
  • Long-term Scheduler
  • Medium term Scheduler
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116. The higher versions of operating systems are so written that programs designed for earlier versions can still be run. What is it called ?
  • Up gradiability
  • Upward mobility
  • Universality
  • Upward Compatibility
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117. A scheduling algorithm is fair
  • if no process faces starvation
  • if a process is starved, detect it and run it with high priority
  • if it uses semaphores
  • only if a queue is used for scheduling
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118. A critical region
  • is a piece of code which only one process executes at a time
  • is a region prone to deadlock
  • is a piece of code which only a finite number of processes execute
  • is found only in Windows NT operation system
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119. Semaphore can be used for solving __________.
  • Wait & signal
  • Deadlock
  • Synchronization
  • Priority
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120. The operating system of a computer serves as a software interface between the user and the ________.
  • Hardware
  • Peripheral
  • Memory
  • Screen
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