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A1.3 Operating systems and control systemsA1.3.5

Multitasking and resource allocation

Explain the role of the operating system in managing multitasking and resource allocation

HL only≈ 45 minCommand term: ExplainPremium

In this lesson

  • How the operating system makes many tasks appear to run at once, and shares resources between them
  • The challenges: task scheduling, resource contention and deadlock
  • How an operating system prevents, avoids, or detects and recovers from deadlock

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What's inside

  1. LearnMultitasking
  2. LearnThe challenges
  3. LabMake a deadlock
  4. LearnWhen deadlock can happen
  5. LearnHow an operating system deals with deadlock
  6. CheckName the problem
  7. CheckQuick check
  8. ExamWorked exam answer
  9. ReviewMistakes examiners see
  10. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 13 marks, with a self-marking markscheme.