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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
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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

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