A system has 4-kB pages, a 48-bit virtual address space, and a 33-bit physical address space. Assuming that page tables contain only physical page numbers--that is, no meta-data--that it is implemented as a simple lookup table, and that physical page numbers are packed into the smallest number of 8-bit bytes that can hold them (there may be wasted bits at each entry), how many bytes of memory are required to hold the entire page table? Please enter your answer in bytes.

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter11: Operating Systems
Section: Chapter Questions
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A system has 4-kB pages, a 48-bit virtual address space, and a 33-bit physical address space.
Assuming that page tables contain only physical page numbers--that is, no meta-data--that it is
implemented as a simple lookup table, and that physical page numbers are packed into the smallest
number of 8-bit bytes that can hold them (there may be wasted bits at each entry), how many bytes
of memory are required to hold the entire page table?
Please enter your answer in bytes.
Transcribed Image Text:A system has 4-kB pages, a 48-bit virtual address space, and a 33-bit physical address space. Assuming that page tables contain only physical page numbers--that is, no meta-data--that it is implemented as a simple lookup table, and that physical page numbers are packed into the smallest number of 8-bit bytes that can hold them (there may be wasted bits at each entry), how many bytes of memory are required to hold the entire page table? Please enter your answer in bytes.
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