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CIT752

Operating System Concepts

  • Sciences
  • 700 level
  • 3 credit units
  • 124 pages
  • 15 units

This course introduces postgraduate students in Information Technology to the fundamental concepts of operating systems (OS). It provides an overview of an OS as a monitor, supervisor, and resource manager, emphasizing OS design and its role in resource scheduling and management. Students will explore different types and components of operating systems, including process, processor, memory, and I/O management. The course also covers scheduling algorithms, concurrent processes, debugging methods, memory management schemes, and file attributes.

About this course

Difficulty
Intermediate
Study hours
150 hours
Maths
Basic
Content
Theoretical, practical
Practical work
No
How it is assessed
  • Assignments
  • Tutor marked assessments
  • Final examination

What you'll read

The real module and unit structure of CIT752, taken from the course material NOUN publishes.

One paragraph, so you can see how it reads

CIT752 · UNIT 1: OPERATING SYSTEMS FUNCTIONS AND SERVICES

The operating system is the software that controls the allocation and usage of hardware resources such as memory, CPU time, disk space, and input and output devices. The unit examines the meaning, function and services provided by the operating system.

What you should be able to do

  1. Explain the fundamental concepts and components of operating systems.
  2. Describe process management, scheduling algorithms, and memory management techniques.
  3. Analyze the challenges of concurrent processes and their solutions.
  4. Implement debugging strategies for operating system-related issues.
  5. Evaluate different file system structures and I/O device management techniques.
  6. Apply protection and security mechanisms to operating system resources.

What it prepares you for

Careers
  • Systems Engineer
  • Software Developer
  • Operating System Designer
  • Network Administrator
  • Database Administrator
Where it is applied
  • Software Development
  • System Administration
  • Cloud Computing
  • Embedded Systems
  • Cybersecurity

Where it gets hard

The units students slow down on, and what makes each one heavy.

  • MODULE 2: SCHEDULING, THREADS AND SYNCHRONIZATION

    Unit 3: Synchronization

    Synchronization primitives and techniques require a deep understanding of concurrent programming and potential race conditions.

  • MODULE 3: COMMUNICATION, DEADLOCKS AND INTERRUPTS

    Unit 2: Deadlocks

    The multiple necessary conditions combined with resource allocation strategies create complex scenarios that are difficult to fully grasp.

A suggested way through it

Suggested

13 weeks, about 28 hours in total. Yours will differ.

  1. Week 1MODULE 1: BASIC CONCEPTS IN OPERATING SYSTEMS
    • Unit 1: Operating Systems Functions and Services · 2 hours

      Read the introduction to operating systems, focusing on the definitions and functions of an OS.. Identify the different types of operating systems (single-user, multi-user, network OS).. Describe the layered structure of an OS and its role as an intermediary between the user and hardware..

  2. Week 2MODULE 1: BASIC CONCEPTS IN OPERATING SYSTEMS
    • Unit 1: Operating Systems Functions and Services · 2 hours

      Explain the functions of the operating system shell and kernel.. Describe the services provided by the operating system, including user interface, program execution, I/O operations, and file-system manipulation.. Differentiate between CLI and GUI user interfaces..

  3. Week 3MODULE 1: BASIC CONCEPTS IN OPERATING SYSTEMS
    • Unit 1: Operating Systems Functions and Services · 2 hours

      Define system calls and their role as an interface between a running program and the operating system.. Explain the different types of system calls (process control, file management, device management, information maintenance, communication).. Provide examples of system calls for each type..

  4. Week 4MODULE 1: BASIC CONCEPTS IN OPERATING SYSTEMS
    • Unit 2: Process Concepts · 2 hours

      Define process and process concept.. Describe the different process states (new, running, waiting, ready, terminated).. Explain the process scheduling and the role of the process scheduler..

  5. Week 5MODULE 1: BASIC CONCEPTS IN OPERATING SYSTEMS
    • Unit 2: Process Concepts · 2 hours

      Describe the Process Control Block (PCB) and its components (process ID, process state, program counter, CPU registers, etc.).. Explain the context switch mechanism and its importance in multitasking.. Understand the functions of CREATE, DESTROY, BLOCK, PRE-EMPT, WAKE UP, and START PROCESS..

  6. Week 6MODULE 1: BASIC CONCEPTS IN OPERATING SYSTEMS
    • Unit 3: Process Creation · 2 hours

      Explain how processes are created and terminated.. Describe cooperating processes and the reasons for allowing process cooperation.. Discuss issues for cooperating processes, including race condition, critical regions, and mutual exclusion..

  7. Week 7MODULE 2: SCHEDULING, THREADS AND SYNCHRONIZATION
    • Unit 1: Dispatching · 2 hours

      Distinguish between different types of scheduling (long-term, medium-term, short-term, I/O scheduling).. Differentiate between preemptive and non-preemptive scheduling policies.. Explain the First-Come, First-Served (FCFS) scheduling algorithm and its advantages and disadvantages..

  8. Week 8MODULE 2: SCHEDULING, THREADS AND SYNCHRONIZATION
    • Unit 1: Dispatching · 2 hours

      Explain the Shortest Job First (SJF) scheduling algorithm and its advantages and disadvantages.. Describe the Round Robin (RR) scheduling algorithm and its effectiveness in time-sharing environments.. Understand the Shortest Remaining Time (SRT) and Highest Response Ratio Next (HRRN) scheduling algorithms..

  9. Week 9MODULE 2: SCHEDULING, THREADS AND SYNCHRONIZATION
    • Unit 2: Threads · 2 hours

      Explain the Multilevel Feedback Queue (MFQ) scheduling scheme and its adaptability.. Distinguish between a process and a thread.. Know the characteristics and benefits of threads..

  10. Week 10MODULE 2: SCHEDULING, THREADS AND SYNCHRONIZATION
    • Unit 3: Synchronization · 2 hours

      Distinguish between Thread Control Block (TCB) and Process Control Block (PCB).. Understand multithreading and race condition.. Understand the mechanisms to support concurrency: semaphores, and monitors..

  11. Week 11MODULE 2: SCHEDULING, THREADS AND SYNCHRONIZATION
    • Unit 3: Synchronization · 2 hours

      Apply mutual exclusion to solve real life semaphores problem.. Know the concepts and general structure of monitor.. Know the limitation of monitors..

  12. Week 12MODULE 3: COMMUNICATION, DEADLOCKS AND INTERRUPTS
    • Unit 1: Messages · 2 hours

      Review Inter-Process Communication (IPC) and its importance.. Differentiate between direct and indirect communication.. Understand synchronization in message passing..

    • Unit 2: Deadlocks · 2 hours

      Understand the conditions for deadlock (mutual exclusion, hold and wait, no preemption, circular wait).. Know the approaches to dealing with deadlock: prevention, avoidance, and detection.. Know a Classical example for deadlock.

  13. Week 13MODULE 3: COMMUNICATION, DEADLOCKS AND INTERRUPTS
    • Unit 3: Interrupts · 2 hours

      Understand the Instruction Cycle with Interrupts.. How Interrupts improve CPU usage.. Classes of Interrupts.

Preparing for the exam

What to do
  • Create detailed summaries of each unit, focusing on key definitions and concepts.
  • Practice solving problems related to scheduling algorithms and memory management.
  • Develop concept maps linking process management, synchronization, and deadlock concepts.
  • Review all Tutor Marked Assignments (TMAs) and their feedback to identify areas of weakness.
  • Focus on understanding the differences between various memory management schemes (paging, segmentation).
  • Create flashcards for key terms like semaphores, monitors, and virtual memory.
  • Allocate specific study time for each module, prioritizing more challenging units.
  • Simulate exam conditions by answering past questions within the time limit.

Questions students ask about this course

What is CIT752 about?

This course introduces postgraduate students in Information Technology to the fundamental concepts of operating systems (OS). It provides an overview of an OS as a monitor, supervisor, and resource manager, emphasizing OS design and its role in resource scheduling and management. Students will explore different types and components of operating systems, including process, processor, memory, and I/O management. The course also covers scheduling algorithms, concurrent processes, debugging methods, memory management schemes, and file attributes.

How many units does CIT752 have?

CIT752, Operating System Concepts, has 15 units across 5 modules, over 124 pages of course material. You can read it one unit at a time.

How many credit units is CIT752?

CIT752 carries 3 credit units, at 700 level in Sciences.

Is CIT752 hard?

CIT752 is rated intermediate level, with basic mathematical content. It is mostly theoretical and practical work.

How long does CIT752 take to study?

About 150 hours of study, spread across its 15 units.

How is CIT752 assessed?

CIT752 is assessed by assignments, tutor marked assessments and final examination.

What can I do with CIT752?

Systems Engineer, Software Developer, Operating System Designer, Network Administrator and Database Administrator.

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