مخطط الموضوع

  • عام

    طي الكل توسيع الكل

  • Contact session

  • Chapter 1 : Introductyion to operating system

  • Chapter 2 : Interrupts

  • Chapter 3 : Process managment

    • Chapter 3 - Lecture 1 صفحة
    • Chapter 3 - Lecture 2 صفحة
    • Tutorial sheet 3 ملف PDF
    • First online quiz إختبار
      مفتوح: الخميس، 24 أبريل 2025، 6:30 PM
      مغلق: الخميس، 24 أبريل 2025، 6:45 PM

      This 1st operating system quiz is about the concepts which have been seen in lectures. All concepts and notions, whether written or spoken, they are concerned by this quiz.

      The tutorial or practical sessions are not concerned by this quiz.

    • Chapter 3 - Lecture 3 صفحة
    • Overlapping homework واجب
      فتحت: الأربعاء، 16 أبريل 2025، 8:00 AM
      تستحق: السبت، 10 مايو 2025، 12:00 AM

      The Problem

      In the tutorial sheet NO 2, in Exercise NO 1, in question NO 4 we were asked to calculate the waiting time for one job in the case of the OS evolution period time titled "Overlapping of CPU operations and I/O operations".

      When we calculated it, we found that the waiting time of one job is greater than one job in case the previous evolution period time (Automatic sequencing = resident monitor). So a new question has arisen.

      The question: How it comes? That in the recent period of OS evolution gives us a waiting time greater than the old period of OS evolution. It's not acceptable.

      Logically, it's the opposite.

      So how explains that?

      The answer is as following:

      In our answer in the tutorial session, we assumed that we have only one job or one batch. Thing that not meet the goal of the "Overlapping of CPU operations and I/O operations" evolution period with is the execution of CPU operations in parallel with I/O operations.

      So in order to put the things in their correct places, we assume that we have more than one batch (450 jobs = 9 batches). And we have to recalculate the waiting time of one job in this case.

      To do that, the students must firstly, draw correctly the chart of executing the 9 batches. And only after drawing the correct chart, they can calculate the new waiting time.

      Remark:

      To draw the executing chart, you can do that either by

      • using a software such as MS Word to draw and write the answer, save it as a file.
      • or using pen and paper and after that take picture of it using your phone and write the answer and then save the all in file.

      The answer files must be submitted under this section before the deadline.

      Good luck...

  • Chapter 4 : Memory managment

    • Chapter 4 - Lecture 1 صفحة
    • Second online quiz إختبار
      مفتوح: الجمعة، 9 مايو 2025، 7:30 PM
      مغلق: الجمعة، 9 مايو 2025، 7:50 PM
    • Chapter 4 - Lecture 2 صفحة
    • Tutorial sheet 5 ملف PDF
    • Online quiz for students in debt only. (Les étudiants endettés en SE 1) إختبار
      مفتوح: الخميس، 8 مايو 2025، 7:30 PM
      مغلق: الخميس، 8 مايو 2025، 8:00 PM

      This quiz is for the students in debt with OS 1 only.

      The other students shouldn't do it.

       

      لتفادي مشكل التوقيت المطروح في منصة موودل حاول أن تجري هذا الامتحان ساعة قبل الوعد المحدد في صفحة الامتحان

      مثلاٌ، إذا كان الامتحان محددًا على الساعة 19 و 30د، حاول أن تجريه على الساعة 18 و 30د

      إذا لم يظهر، حاول مرة أخرى على الساعة 19 و 30د

       

       

      Because of the Moodle timing problem (it's a technical problem), try to pass your exam an hour before the timing displayed on the test page.

      For example, the test is scheduled at 19h30, try to do it at 18h30. If it doesn't work at 18h30, retry it at 19h30.

      It's an online quiz of 31 questions graded over 20 points. The 31 questions must be answered in 25 minutes.

  • Exam