Virtual Memory

Question

Comments

https://gateoverflow.in/153152/true-false

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Page fault means missing page in memory.

If there is a read-only page and we want to write it then this will lead to a trap to OS. This is not page fault.

Please explain what am I missing?

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Page fault is an exception , generated by our processor.

its quite messy to know the exact differences b/w Trap/Interrupts/Faults , they are terminologies , and second thing processor dependent like divide by 0 is considered Trap in some systems and in other systems it's considered as hardware interrupt.

https://stackoverflow.com/questions/3149175/what-is-the-difference-between-trap-and-interrupt

as per my knowledge , when a process try to perform write operation on a read only page , it's kind of segmentation fault or more correctly 'protection fault' but fault , not trap. it's generated by processor.

read it here https://en.wikipedia.org/wiki/General_protection_fault

here it said that in Microsoft windows protection faults are considered as page faults.

other useful references

https://stackoverflow.com/questions/30923127/why-page-fault-is-considered-as-trap

https://stackoverflow.com/questions/6950549/segmentation-fault-vs-page-fault

https://stackoverflow.com/questions/10948930/does-a-page-fault-occur-whenever-we-have-a-segmentation-fault

https://stackoverflow.com/questions/8385097/what-is-a-write-to-read-only-page-fault-called

https://en.wikipedia.org/wiki/Interrupt_descriptor_table

https://www.careercup.com/question?id=5078397269049344

Answer 1

Check the comment of Bikram Sir

https://gateoverflow.in/139373/self-doubt

I think D should the ans 

Comments

Thanks @#Rahul