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Assignment No. 03 Semester: Fall 2014 CS604 –Operating System Total Marks: 15 Due Date: 16/2/2015

Uploading instructions:

 

  • Your assignment must be in .doc format. (Any other formats like scan images, PDF, Zip, rar, bmp,etc will not be accepted).
  • Save your assignment with your ID (e.g. bc020200786.doc).
  • No assignment will be accepted through email.

 

Rules for Marking:

 

It should be clear that your assignment will not get any credit if:

  • The assignment is submitted after due date.
  • The submitted assignment does not open or file is corrupted.
  • Your assignment is copied from internet, handouts or from any other student

      (Strict disciplinary action will be taken in this case).

 

Assignment

 

Question 1:   (5 Marks)

 

Consider the following snapshot of a system:

 

 

Allocation

Max

Available

 

A

B

C

D

A

B

C

D

A

B

C

D

P0

1

1

1

2

3

4

2

2

1

2

3

4

P1

1

0

2

2

1

3

4

14

 

 

 

 

P2

1

4

5

6

2

7

5

8

 

 

 

 

P3

2

5

4

2

3

5

7

9

 

 

 

 

P4

1

5

2

7

1

6

3

9

 

 

 

 

 

Need

A

B

C

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answer the following questions using the banker’s algorithm:

 

(a)   What is the content of the matrix Need?                                             5

 

 

(b)   Is the system in a safe state? If yes identify the safe sequence. Show the step by step execution by updating the data structure if necessary.                                                            10

 

 

NOTE:Do not put any query on MDB about this assignment, if you have any query then emailatcs604@vu.edu.pk.

 

Deadline: Your assignment must be uploaded/submitted on or before


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Replies to This Discussion

2nd qus ka kya ans hoga smjh ni aarhi h mjhy sahi plz koi bata dy doc.x to open ni horha mra jo solution h yahan ??????

fairy ap file download kr k usy online convert kr lein then opn ho jai ga apky pas docx instal nai ho ga 

I didn't get when total available are 10 resources and P1 needs 12 resources for process D, how the system is in safe state.

friends assignment solution copy krne walon se aik guzarish hy k aik table nai banna bss har sequence ka alag table banna hy so dehan se zara 

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