June 12, 2021

Sources of Interrupts MCQ’s

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This set of Embedded System Multiple Choice Questions & Answers (MCQs) focuses on “Sources of Interrupts”.

1. Which of the following is the common method for connecting the peripheral to the processor?
a) internal interrupts
b) external interrupts
c) software
d) exception

2. How a software interrupt is created?
a) instruction set
b) sequential code
c) concurrent code
d) porting

3. Which can be used to pass the status information to the calling software in the software interrupt mechanism?
a) register
b) memory
c) flag
d) nmi

4. How many exceptions does an MC68000 have?
a) 256
b) 128
c) 90
d) 70

5. What does NMI stand for?
a) non-machine interrupt
b) non-maskable interrupt
c) non-massive interrupt
d) non-memory interrupt

6. Which interrupts are generated by the on-chip peripherals?
a) internal
b) external
c) software
d) hardware

7. Which interrupts allows a protected state?
a) internal interrupt
b) external interrupt
c) software interrupt
d) both internal and external interrupts

8. Which interrupt can make a change in the processor’s mode?
a) internal interrupt
b) external interrupts
c) exceptions
d) software mode

9. Which of the following use SWI as interrupt mechanism?
a) PowerPC
b) MC68000
c) Z80
d) IBM PC

10. Which of the following are accessible by the ISR in software interrupt mechanism?
a) register
b) interrupt
c) nmi
d) memory

11. Which of the following supplies additional data to the software interrupt?
a) internal interrupt
b) external interrupt
c) software interrupt
d) nmi

12. Which software interrupt is used in MC68000?
a) Internal interrupt
b) TRAP
c) SWI
d) NMI

13. What does SWI stand for?
a) standard interrupt instruction
b) sequential interrupt instruction
c) software interrupt instruction
d) system interrupt instruction

14. What allows the data protection in the software interrupt mechanism?
a) Different mode
b) Same mode
c) SWI
d) TRAP

15. Which NMI is used in the IBM PC?
a) SWI
b) TRAP
c) 80×86 NMI
d) Maskable interrupt

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