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UGC NET CSE | December 2015 | Part 3 | Question: 40

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1 1 vote

In Unix operating system, special files are used to

  1. buffer data received in its input from where a process reads
  2. provide a mechanism to map physical device to file names
  3. store list of file names plus pointers associated with i-nodes
  4. store information entered by a user application program or utility program

1 Answer

1 1 vote

Answer B

  • provides a mechanism to map physical device to file names
  • Windows and DOS also have special files.
  • provide simple interfaces between drivers and  peripheral devices such as printers and serial ports

Please refer: https://en.wikipedia.org/wiki/Device_file

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