Virtual Memory Management Part II."

1. Give an example in which a working set-page-replacement strategy would replace:
   1. the best possible page.
   2. the worst possible page

1. The key to the proper and efficient operation of the page-fault-frequency (PFF) page-replacement strategy is the selection of the threshold interfault time values. Answer each of the following questions.
   1. What are the consequences of selecting too large an upper value?
   2. What are the consequences of selecting too small a lower value?
   3. Should the values remain fixed, or should they be adjusted dynamically?
   4. What criteria would you use to adjust the values dynamically?