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Memory: Review Questions

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Lawrence Angrave edited this page Nov 27, 2015 · 2 revisions

Question numbers subject to change

Q1

What are the following and what is their purpose?

  • Translation Lookaside Buffer
  • Physical Address
  • Memory Management Unit
  • The dirty bit

Q2

How do you determine how many bits are used in the page offset?

Q3

20 ms after a context switch the TLB contains all logical addresses used by your numerical code which performs main memory access 100% of the time. What is the overhead (slowdown) of a two-level page table compared to a single-level page table?

Q4

Explain why the TLB must be flushed when a context switch occurs (i.e. the CPU is assigned to work on a different process).

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