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Question 67

Hardware mechanism that enables a device to notify the CPU is called:

  1. ABusy-waiting
  2. BInterrupt
  3. CPolling
  4. DDMA
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Correct answer: (B) Interrupt

Explanation

An interrupt is a hardware signal that a device sends to the CPU to request attention. Polling and busy-waiting are software checks made by the CPU.

From DSSSB TGT Computer Science Practice Set 4

This is question 67 of DSSSB TGT Computer Science Practice Set 4. 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.