CS计算机代考程序代写 My sites / 21S-COMSCI111-1 / Site info / Final Exam Spring 2021 – Finals week

My sites / 21S-COMSCI111-1 / Site info / Final Exam Spring 2021 – Finals week

Spring 2021 – COM SCI111-1 – EYOLFSON

Information

Question 11
Not yet answered

Points out of 1.00

Question 12
Not yet answered

Points out of 2.00

Page Tables (20 minutes).

Consider a three level page table using the Sv39 format. That means each level of page table uses 9 index bits, and there are 12 offset
bits. Each PTE is 8 bytes, and physical addresses are 56 bits.

How large is a page?

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Does each level of the page table fit on a page? Why?

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https://ccle.ucla.edu/my/
https://ccle.ucla.edu/course/view.php?id=101241
https://ccle.ucla.edu/course/view.php?id=101241&section=0
https://ccle.ucla.edu/mod/quiz/view.php?id=3983573

Question 13
Not yet answered

Points out of 10.00

Question 14
Not yet answered

Points out of 7.00

Assume that virtual address 0x00404038FF maps to physical address 0x1118FF explain how you’d use a three level page table to do this
translation. For each level of the page table, give the indices you would use. For everything except the level 0 page table, you may
assume the entry is an abstract page table. The virtual address in binary is 0b000_0000_0100_0000_0100_0000_0011_1000_1111_1111.

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One variation is to use a gigapage (which is 1 GiB). The page tables still fit within the original page size. What modification would you
have to make to resolve 0x00404038FF as a gigapage?

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More 

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◀ Midterm

Jump to…

Lab 1B Week 1 ▶

https://ccle.ucla.edu/mod/quiz/view.php?id=3875405&forceview=1
https://ccle.ucla.edu/mod/kalvidres/view.php?id=3834460&forceview=1