Operating system mcqs process structures

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Operating system mcqs process structures

Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a programmed input/output(PIO) .....
A
the CPU uses polling to watch the control bit constantly, looping to see if a device is ready
B
the CPU writes one data byte to the data register and sets a bit in control register to show that a byte is available
C
the CPU receives an interrupt when the device is ready for the next byte
D
the CPU runs a user written code and does accordingly
Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which operation is performed by an interrupt handler?
A
Saving the current state of the system
B
Loading the interrupt handling code and executing it
C
Once done handling, bringing back the system to the original state it was before the interrupt occurred
D
All of the mentioned
Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How does the Hardware trigger an interrupt?
A
Sending signals to CPU through a system bus
B
Executing a special program called interrupt program
C
Executing a special program called system program
D
Executing a special operation called system call
Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a trap/exception?
A
hardware generated interrupt caused by an error
B
software generated interrupt caused by an error
C
user generated interrupt caused by an error
D
none of the mentioned
Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The initial program that is run when the computer is powered up is called .....
A
boot program
B
bootloader
C
initializer
D
bootstrap program
There are 5 questions to complete.

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