What is absolutely required to implement demand paging? the ability to restart a

Question

What is absolutely required to implement demand paging? the ability to restart any CPU instruction that triggered the page fault a swap device, the faster the better RWX page permission bits in the page table entry MMU with page table support and address translation What is NOT a step in handling a page fault? update the page table entry with the frame number after the page read operation (from the swap device) completes schedule a write operation for the page that needs to be swapped out find a free frame check the address reference to see if it is valid or not

Explanation / Answer

3. You are absolutely right in choosing the answers to the Question 3.

4. I think you are write because the remaining three options are the steps involved in handling a page fault.So by eliminating the option.The answer would be

Schedule a write operation for the page that needs to be swapped out.

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