Discussion
Interrupts which are initiated by an instruction are
Answer: D
Interrupts initiated by an instruction are software interrupts.
A program executes an instruction, such as INT in the 8086 family or a system call, that causes an interrupt on purpose, for instance to ask the operating system for a service. Hardware interrupts (C) come from devices and are external events (B) signalled to the processor. 'Internal' (A) interrupts, or traps, arise from conditions such as division by zero inside the processor.
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