***   REVIEW  QUESTIONS  IN  VIRTUAL  MEMORY   ***
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1.  How is paging implemented?



2.  What are the fields in a page table entry?
 


3.  What is the major drawback of pure paging?



4.  What are the drawbacks of pure segmentation?



5.  What is the drawback of multi-level paging?



6.  What is a TLB?



7.  Compare multi-level paging with combined paging and segmentation?



8.  Suppose the virtual address is 32 bits, the page size is 4KBytes
    and the PTE is 4 bytes,
     
     (a) What is the size of the page table assuming pure paging?

     (b) Suppose two-level paging is used instead and the number of
         entries in the first level page table is 1024, then
           (i) What is the size of the first level page table?
           (ii) What is the size of each second level PT?