cop4600-fa07-quiz2Solutions

cop4600-fa07-quiz2Solutions - COP4600 Operating Systems...

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Unformatted text preview: COP4600 Operating Systems Quiz 2 Solutions Tuesday, October 30th 2007 Prepared by Tuba Yavuz-Kahveci University of Florida tyavuz@cise.ufl.edu Student Information First Name: Last Name: UFID: Signature: Important note: There are 2 questions. Please read the questions carefully. Good luck! Questions 1. (2 pts) What is Translation Lookaside Buffer (TLB) and how can it improve the performance? Answer: TLB is a table that holds a subset of the page table entries. Since TLB is in MMU, when MMU needs to translate a virtual address to a physi- cal address it can avoid main memory access by referring to the TLB for the translation. If the entry it is looking for is not in the TLB (i.e., a TLB miss) then the page table that resides in the main memory needs to be accessed. 2. (3 pts) Given the page table in Figure 1, for the virtual address references on the next page decide i) the corresponding physical address, ii) whether there will be a page fault and if so show the content of the page table after...
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This test prep was uploaded on 04/18/2008 for the course COP 4600 taught by Professor Yavuz-kahveci during the Fall '07 term at University of Florida.

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cop4600-fa07-quiz2Solutions - COP4600 Operating Systems...

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