Operating System Questions & Answers (Compiled from UPSC, SSC ,PSC ,IBPS previous question papers)

  • Scissoring enables
  • Aa part of data to be displayed
  • Bentire data to be displayed
  • Cfull data display on fulll area of sceen
  • Dno data display
  • Daisy chain is a device for
  • Aconnecting a number of controllers to a device
  • Bconnecting a number of device to a controller
  • Call of above
  • Dnone of above
  • A high paging rate
  • Amay cause a high I/O rate
  • Bkeeps the system running well
  • Cis a symptom of too much processor activity
  • Dalways creates a slow system
  • A public key encryption system
  • AAllows only the correct sender to decode the data
  • BAllows only the correct receiver to decode the data
  • CAllows anyone to decode the data
  • Dnone of above
  • Fragmentation of a file system
  • Aoccurs only is file is not used properly
  • Bcan always be prevented
  • Chappens in all file systems
  • Dcan be removed by compaction
  • Semaphores function is to
  • Asynchronize critical resources to prevent deadlock
  • Bsynchronize processes for better CPU utilization
  • Cused for memory management
  • Dnone of above
  • Operating system is
  • AA collection of hardware components
  • BA collection of input output devices
  • CA collection of software routines
  • DAll of above
  • The LRU algorithm
  • Apages out pages that have been used recently
  • Bpages out pages that have not been used recently
  • Cpages out pages that have been least used recently
  • Dpages out the first page in a given area
  • A thread is
  • Alightweight process where the context switching is low
  • Blightweight process where the context swithching is high
  • Cused to speed up paging
  • Dused in dead locks
  • Multiprogramming systems
  • AAre easier to develop than single programming systems
  • BExecute each job faster
  • CExecute more jobs in the same time
  • DAre used only on large main frame computers