Computer Organization Questions and Answers – Interrupts
Interrupts MCQs : This section focuses on "Interrupts" of Computer Organization & Architecture. These Multiple Choice Questions (MCQ) should be practiced to improve the Computer Organization & Architecture skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.
1. The main job of the interrupt system is to identify the ______ of the interrupt.
A. signal
B. device
C. source
D. peripherals
View Answer
Ans : C
Explanation: The main job of the interrupt system is to identify the source of the interrupt.
2. The hardware interrupts which can be delayed when a much high priority interrupt has occurred at the same time are known as ___________.
A. Non Maskable Interrupt
B. Maskable Interrupt
C. Normal Interrupt
D. None of the above
View Answer
Ans : B
Explanation: Maskable Interrupt : The hardware interrupts which can be delayed when a much high priority interrupt has occurred at the same time.
3. The interrupts that are caused by software instructions are called ______________.
A. Exception interrupts
B. Normal Interrupt
C. hardware interrupt.
D. None of the above
View Answer
Ans : B
Explanation: Normal Interrupt : The interrupts that are caused by software instructions are called normal software interrupts.
4. In Daisy Chaining Priority, the device with the highest priority is placed at the ______.
A. First Position
B. Last Position
C. Can be placed anywhere
D. Depend on device
View Answer
Ans : A
Explanation: The device with the highest priority is placed at the first position followed by lower priority devices and the device which has lowest priority among all is placed at the last in the chain.
5. Which interrupt is unmaskable?
A. RST 5.5
B. RST 6.5
C. RST 7.5
D. Trap
View Answer
Ans : D
Explanation: The trap is a non-maskable interrupt as it deals with the ongoing process in the processor.
6. Which microprocessor are designed to complete the execution of the current instruction and then to service the interrupts?
A. 8081
B. 8082
C. 8084
D. 8085
View Answer
Ans : D
Explanation: The 8085 microprocessor are designed to complete the execution of the current instruction and then to service the interrupts.
7. open-collector type circuits are generally used for ___________.
A. open-drain
B. Batch processing
C. interrupt service lines.
D. None of the above
View Answer
Ans : C
Explanation: open-collector type circuits are generally used for interrupt service lines
8. The Interrupt-request line is a _________ along which the device is allowed to send the interrupt signal.
A. Data line
B. control line
C. Address line
D. None of the above
View Answer
Ans : B
Explanation: The Interrupt-request line is a control line along which the device is allowed to send the interrupt signal.
9. Which table handle stores the addresses of the interrupt handling sub-routines?
A. Interrupt-vector table
B. Vector table
C. Symbol link table
D. All of the above
View Answer
Ans : A
Explanation: Interrupt-vector table handle stores the addresses of the interrupt handling sub-routines.
10. Interrupts initiated by an instruction is called as ____________.
A. Internal
B. External
C. hardware
D. Software
View Answer
Ans : B
Explanation: Interrupts initiated by an instruction is called as External
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