Consider virtual addressing of 32 bits. Assume that the page size is 16 MB. YOU

Question

Consider virtual addressing of 32 bits. Assume that the page size is 16 MB. YOU have 2 GB of RAM. a. How many entries do you need in the page table? b. How many bits are needed to index the page table? c. Assume that Table 1 lists all the virtual pages that are currently in physical memory. ifa virtual page is not listed in Table 1, it implies any address in that range will result a page fault. Translate the virtual addresses below to the physical address using Table 1 and mention which will be hit and which will cause a miss:

Explanation / Answer

a) number of entries in the page table = total RAM/page size

= 2GB/16MB

= 2X1024 MB/16MB

= 128

b) number of bits to index the page table = log 2 128 = 7

c)

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