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Assignment No. 03
Semester: Spring 2016

CS604 –Operating System

Total Marks: 20


Due Date: 28-07-2016


Assignment Objective:

  • To enhance presentation skills of students
  • How Random Access Memory works


Uploading instructions:

  • Your assignment must be in .ZIP format (Any other formats like scan images, PDF, 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








Prepare 4 to 5 slides and record your video about the following topic. Upload slides and video on VU-LMS after zipping it.


Topic: How Paging Saves External Fragmentation




Instructions for the assignment preparation:

  1. You are required to make a presentation file (.ppt or .pptx) for your assignment solution
  2. Presentation will consist of maximum of 4 – 5 slides
  3. First slide will contain student name and ID
  4. Remaining slides will contain the solution of the assignment
  5. You have to formally present your assignment with proper dress code and have to record the video of your presentation
  6. You can use any video recording facility such as web cam, camera, mobile phone or etc. for recording of your presentation (See the tutorial “Tips for Recording Videos.mp4” available at download section of VULMShttp://vulms.vu.edu.pk/Courses/CS506/Downloads/Tips%20for%20Recordi...).
  7. In first slide, you will speak your name and ID, and in remaining slides, you will be required to explain your solution.
  8. Your introduction and explanation should not take more than 4 to 5 minutes
  9. After recording of your presentation, you have to convert your video in “.3gp” format using any video conversion tool to reduce the size of the video file. (See the tutorial “Video Compression.mp4” available at download section of VULMS,http://vulms.vu.edu.pk/Courses/CS506/Downloads/Soft%20Skill%20Assig...)
  10. After converting the video in .3gp format, review your file to verify that audio and video are properly playing. 
  11. Install VLC media player to view your compressed video before uploading on VU-LMS. You can download VLC from http://www.videolan.org/vlc/download-windows.html
  12. It is preferable to use English in your presentation in case of reluctance you can also use Urdu language.
  13. Note that you will record your presentation standing in front of camera.

Weightage of Assignment:

  • This assignment has 5% weightage of your overall marks in CS604. 

Instructions for the assignment submission:

  • Compress your video file and presentation file using any compression tool like WINZIP or WINRAR
  • Save your assignment with your ID (e.g. bc020200786.rar)
  • Make sure that size of assignment file should not exceed 30 MB

Your assignment must be uploaded on VULMS on or before Monday28th July 2016.

For any query about the assignment, contact at cs604@vu.edu.pk


          GOOD LUCK




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Replies to This Discussion

Please Discuss here about this assignment.Thanks
Our main purpose here discussion not just Solution
We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

start discussion..............................................................NOW!

kuch smj nai a rha assignment ka question
Book mn ye likha hua
Paging itself is a form of dynamic relocation. When we use a paging scheme, we have
no external fragmentation; however we may have internal fragmentation.


plz koi vu walun se puch lo is assignment ka because is ki to kuch samaj nahi aa rahi

aoa plz assignment discus kre lodshding aur low power voltage ki wja si sara din computer on nahe hota .video ks ki bnani ha .resepresenter hmi hona ha vido me ye kesi ho skta ha.
boy to assignment bna len gi ,assignment me apna face dekha den gi aur send krde gi
lekn girls kesi kren gi .
aur topic ko kuch discus kre.

Ap nakab mn bna len video r PowerPoint ki just file and krni hy jo kuch us mn likhn gy uski presentation ap ny deni video mn

Paging is a matter of holding data in memory. Fragmentation is the result of writing data to storage, so the more the computer can rely on the paging file for writing new data the less fragmented the resulting file will be when written to disk.

A typical fragmentation problem occurs when a document is being revised. If the original document is 100K and is followed immediately on the disk by another file, any additions to the document will make it longer and that addition has to go someplace else as a fragment. If there are two documents open at the same time (like one for how to clean up the house and a second one for where to find the things that have been put away) and they are each being edited alternately, without paging there could be dozens of tiny fragments in each one as they were written. With paging each file gets written once instead of dozens of times..

When you pack the car for a vacation trip, you gather up all the various items according to when they will be used. All the beach things will go in first so they will come out last, suitcases will go on top. If you just threw the stuff in the trunk it would all be jumbled. The original piles of items are like paging and the mix (or not) of the items in the trunk is like fragmentation

2 files bnani hain ak powerpoint ki file ho gi r 2sri hm ny video record krni hai jis m hm apni powerpoint wali presentation ko explain karin gy

External Fragmentation
– Frequent loading and unloading programs causes free space to be broken
into little pieces
– External fragmentation exists when there is enough memory to fit a process
in memory, but the space is not contiguous
– 50-percent rule: Simulations show that for every 2N allocated blocks, N
blocks are lost due to fragmentation (i.e., 1/3 of memory space is wasted)
– We want an allocation policy that minimizes wasted space.

abiha kya yr net s utha k same send kr dya ap n??????asan sa send kren na smj b ajai jis ki....

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