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BN104 Operating Systems

tag 0 Download 2 Pages / 410 Words tag 08-07-2021

Question:

Attempt the Assignment 1 quiz after Week 6, and paste below the Moodle summary of your result.

Compare and contrast internal fragmentation and external fragmentation (explain with simple example, do not use the example from the lecture). In your opinion, which one might be preferred over the other. Give reason for your answer (word limit 150 words). 

 

Memory compact/relocation is done for using the memory efficiently. In your opinion, how often should memory compaction/relocation be performed What do you think the advantages and disadvantages would be of performing it even more often (Word limit:  100 words).

You must provide references and cite the sources if you consult any external source for this task.

 

Given the following loading times, determine in which order the pages are replaced by the FIFO algorithm (explain your reason).

 

Describe how the simplified version of LRU works. Using the given values in table below for the Referenced and Modified bits, determine in which order the pages are replaced by the simplified LRU algorithm and explain why you think so.  

Page

Referenced Bit

Modified Bit

Page  0

0

1

Page  3

0

0

Page  6

1

0

Page  8

0

0

Page 12

1

1

Page 14

1

0

Page 16

1

0

Page 18

1

1

 

 

Process Management and Scheduling

 

Given the following arrival time and CPU cycle times.

Job

Arrival Time

CPU cycles required

A

0

11

B

2

13

C

5

5

D

7

1

E

13

3

Draw a timeline for each of the following scheduling algorithms and also show the details of the ready queue formation during the time line.     

i) FCFS

ii) SJN

iii) SRT

iv) Round Robin (use time quantum of 3)

 

Using either internet resources or books, understand the concept of waiting time and turnaround time.  Define those terms (waiting time and turnaround time) in your own words. Then calculate turnaround time for every job for all four scheduling algorithms mentioned in B-Q2-a (Details of the calculations is essential).

You must provide references and cite the sources that you consulted for this task.

 

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[Accessed 09 February 2023].

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My Assignment Help. BN104 Operating Systems [Internet]. My Assignment Help. 2021 [cited 09 February 2023]. Available from: https://myassignmenthelp.com/free-samples/bn104-operating-systems/compaction-techniques.html.


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