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Question 31Asked in UGC NET Computer Science, December 2015 (Paper II & III, Selected Questions)

In Unix operating system, special files are used to :

  1. ABuffer data received in its input from where a process reads
  2. BProvide a mechanism to map physical device to file names
  3. CStore list of file names plus pointers associated with i-nodes
  4. DStore information entered by a user application program or utility program
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Correct answer: (B) Provide a mechanism to map physical device to file names

Explanation

In the Unix file system, six types of file are distinguished: special, named pipes, links, symbolic links, regular (ordinary) and directory. A special file contains no data, but provides a mechanism to map physical devices to file names. The file names are used to access peripheral devices, such as terminals and printers.

From UGC NET Computer Science PYQ, December 2015 (Paper II & III, Selected Questions)

This is question 31 of UGC NET Computer Science PYQ, December 2015 (Paper II & III, Selected Questions). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.