8086/8088 Interrupt Cycle MCQs : This section focuses on the "8086/8088 Interrupt Cycle". These Multiple Choice Questions (MCQs) should be practiced to improve the 8086/8088 Interrupt Cycle skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
After every response to the single step interrupt the flag that is cleared is
A. IF (Interrupt Flag)
B. TF (Trap Flag)
C. OF (Overflow Flag)
D. None of the mentioned
Question 2
At the end of ISR, the instruction should be
A. END
B. ENDS
C. IRET
D. INTR
Question 3
Example of an external interrupt is
A. divide by zero interrupt
B. keyboard interrupt
C. overflow interrupt
D. type2 interrupt
Question 4
Example of an internal interrupt is
A. divide by zero interrupt
B. overflow interrupt
C. interrupt due to INT
D. all of the mentioned
Question 5
If an interrupt is generated from outside the processor then it is an
A. internal interrupt
B. external interrupt
C. interrupt
D. none of the mentioned
Question 6
If the interrupt is generated by the execution of an interrupt instruction then it is
A. internal interrupt
B. external interrupt
C. interrupt-in-interrupt
D. none of the mentioned
Question 7
During the execution of an interrupt, the data pushed into the stack is the content of
A. IP
B. CS
C. PSW
D. All of the mentioned
Question 8
The interrupt request that is independent of IF flag is
A. NMI
B. TRAP
C. Divide by zero
D. All of the mentioned
Question 9
The type of the interrupt may be passed to the interrupt structure of CPU from
A. interrupt service routine
B. stack
C. interrupt controller
D. none of the mentioned
Question 10
When the CPU executes IRET,
A. contents of IP and CS are retrieved
B. the control transfers from ISR to main program
C. clears the trap flag
D. clears the interrupt flag