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Input Output Organization - Computer Awareness Objective Questions with Answers

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Computer Awareness multiple choice questions and answers set contain 5 mcqs on input output organization. Each quiz objective question has 4 options as possible answers. Choose your option and check it with the given correct answer.
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(1) Which of the following statement is FALSE in view of interrupts ?
[A] interrupts are changes in flow of control caused by some event related to I/O.
[B] interrupts are synchronous with a program.
[C] when an interrupt occurs, some actions are taken, and then system returns to exactly same state as it was before the interrupt.
[D] none of the above

Comment

Answer: Option [B]
(2) An attempt to execute illegal or undefined instruction may lead to
[A] Trap event
[B] I/O interrupt
[C] CPU malfunctioning
[D] None of the above

Comment

Answer: Option [A]

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(3) DMA module can communicate with CPU through
[A] Interrupt
[B] Cycle stealing
[C] Branch instruction
[D] None of the above

Comment

Answer: Option [B]
(4) Interrupts which are initiated by an instruction are
[A] Internal
[B] External
[C] Hardware
[D] Software

Comment

Answer: Option [D]
(5) A CPU generally handles an interrupt by executing an interrupt service routine
[A] as soon as an interrupt is raised
[B] by checking the interrupt register at the end of fetch cycle
[C] by checking the interrupt register after finishing the executing the current instruction
[D] by checking the interrupt register at fixed time intervals

Comment

Answer: Option [A]

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