Maurice Tutor

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Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 1 Day Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 30 Nov 2017 My Price 9.00

virtual memory system

  1. We consider a program which has the two segments shown below consisting of in­ structions in segment 0, and read/write data in segment 1. Segment 0 has read/execute protection, and segment 1 has read/write protection. The memory system is a de­ mand-paged virtual memory system with virtual addresses that have a 4-bit page num­ ber, and an 10-bit offset. The page tables and protection are as follows (all numbers in the table are in decimal):

Segment o

Segment 1

Read/Execute

Read/Write

Virtual Page #

Page frame #

Virtual Page #

Page frame #

 

0

 

2

 

0

On Disk

 

1

On Disk

 

1

 

14

 

2

 

11

 

2

 

9

 

3

 

5

 

3

 

6

 

4

On Disk

 

4

On Disk

 

5

On Disk

 

5

 

13

 

6

 

4

 

6

 

8

 

7

 

3

 

7

 

12

For each of the following cases, either give the real (actual) memory address which re­ sults from dynamic address translation or identify the type of fault which occurs (ei­ ther page or protection fault).

    1. Fetch from segment 1, page 1, offset 3

    2. Store into segment 0, page 0, offset 16

    3. Fetch from segment 1, page 4, offset 28

    4. Jump to location in segment l, page 3, offset 32

Answers

Maurice Tutor
(5)
Status NEW Posted 30 Nov 2017 10:11 PM My Price 9.00

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