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Question 69Asked in BPSC TRE 1.0 (2023) Computer Science Class 11-12

The method of accessing the I/O devices by repeatedly checking the status flags is

  1. Aprogram-controlled I/O
  2. Bmemory-mapped I/O
  3. CI/O-mapped I/O
  4. DMore than one of the above
  5. ENone of the above
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Correct answer: (A) program-controlled I/O

Explanation

In program-controlled I/O (polling), the CPU keeps checking a device's status flag until the device is ready.

From BPSC TRE 1.0 (2023) Computer Science Class 11-12 — Previous Year Paper

This is question 69 of BPSC TRE 1.0 (2023) Computer Science Class 11-12 — Previous Year Paper. 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.