midterm2a - Name CIS 586 Midterm 2 April 9th 2009 Answer...

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Name: CIS 586 Midterm 2 April 9 th , 2009 Answer all questions in the space provided. You may write on the back if you need more room. Closed book, closed notes, closed neighbor. Please write your name on each page. Question 1 / 10 pts Question 2 / 10 pts Question 3 / 20 pts Question 4 / 10 pts Question 5 /20 pts Question 6 /20 pts Question 7 / 10 pts Total / pts 1
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Question 1) (10) What is the main difference between contiguous (base/limit ptrs) and non-contiguous (paging)? What are the trade-offs? Question 2) (10) Consider Next-Fit, Best-Fit , Worst-Fit and First-Fit. Explain the differences between these algorithms. Question 3) (20) Given a 64-bit addressable CPU, a pagesize of 4MB, a page entry size of 16 bytes, and a ram size of 8GB answer the following question. You can leave your discussions in the form 2 x (where you would give x ). Which memory management technique would you prefer for this setting: Standard page-table, inverted page-table and multilevel page-table. Present your discussion in terms of both size of the table and complexity.
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