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Question 56Asked in DSSSB TGT Computer Science (Technical), 1 Aug 2021, Shift 1

The instruction which are executed only in kernel mode is known as ________.

  1. AMemory instruction
  2. BArithmetic instruction
  3. CPrivileged instruction
  4. DLogical instruction
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Correct answer: (C) Privileged instruction

Explanation

Privileged instructions (I/O, changing the timer, disabling interrupts, etc.) can run only in kernel mode; attempting them in user mode causes a trap.

From DSSSB TGT Computer Science PYQ (Technical), 1 Aug 2021, Shift 1

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