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Questions and Answers
What is an operating system?
What is an operating system?
Which of the following are examples of operating systems? (Select all that apply)
Which of the following are examples of operating systems? (Select all that apply)
Operating systems do not help users in solving problems.
Operating systems do not help users in solving problems.
False
What are the four components of a computer system?
What are the four components of a computer system?
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The operating system controls the ______ and coordinates its use among various application programs.
The operating system controls the ______ and coordinates its use among various application programs.
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What is the role of application programs in a computer system?
What is the role of application programs in a computer system?
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What is an operating system?
What is an operating system?
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Which of the following are examples of operating systems? (Select all that apply)
Which of the following are examples of operating systems? (Select all that apply)
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An operating system provides an environment within which other programs can do useful ________.
An operating system provides an environment within which other programs can do useful ________.
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Which of the following is NOT a goal of operating systems?
Which of the following is NOT a goal of operating systems?
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What are the four components of a computer system?
What are the four components of a computer system?
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An application program directly manages hardware resources.
An application program directly manages hardware resources.
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The ________ view refers to the perspective from which the user interacts with the operating system.
The ________ view refers to the perspective from which the user interacts with the operating system.
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Study Notes
Operating System Concepts
- Operating System (OS) is software that manages computer hardware.
- Acts as an intermediary between users and hardware.
- OS is used in cars, smartphones, PCs, etc.
- OS provides an environment for programs to perform useful work.
- OS goals are to execute user programs easily, make the system convenient to use, and use the computer hardware efficiently.
Computer System Structure
- A computer system is divided into four components:
- Hardware provides basic resources like the CPU, memory, I/O devices.
- Operating System controls the hardware and coordinates its use among programs.
- Application Programs define the way system resources are used to solve user problems (e.g., word processors, compilers, web browsers).
- Users are people, machines, or other computers interacting with the system.
Dynamics of System Components
- Example: A user wanting to print a paper illustrates the interaction between all components.
- The user interacts with the software application to print a document, the software interacts with the operating system.
- The OS then manages the printer hardware to execute the user's print request.
Course Information
- The course is Operating Systems, taught by Dr. Wafaa Samy and Dr. Hanaa Eissa.
- The textbook is Operating System Concepts (10th edition) by A. Silberschatz, P.B. Galvin and G. Gagne, John Wiley& Sons, 2018.
- The course grade is comprised of coursework, a midterm exam, and a final exam.
- Coursework constitutes 30% of the final grade, with quizzes worth 20% and activities worth 10%.
- Activities include section attendance, a project, and a practical exam.
- The midterm exam is worth 20% and the final exam is worth 50% of the overall grade.
Course Topics
- The course covers various aspects of operating systems:
- What operating systems do
- Computer system organization
- Storage structure
- Computer system architecture
- Operating system operations
- Resource management
- Security and protection
- Virtualization
- Distributed systems
- Computing environments
- Free/Libre and open-source operating systems
Operating System Definition
- An operating system (OS) manages a computer's hardware and acts as an intermediary between the user and the hardware.
- It provides an environment for other programs to function.
- Common operating system examples: DOS, Unix/Linux, Mac OS, Windows, Android, iOS.
Operating System Goals
- Operating system goals are to:
- Execute user programs and simplify problem-solving
- Make the computer system user-friendly
- Use the hardware efficiently
Computer System Structure
- A computer system consists of four main components:
- Hardware: Central Processing Unit (CPU), memory, input/output (I/O) devices, etc.
- Operating System: Controls the hardware and manages its use among various applications.
- Application Programs: Define how system resources are used to solve user problems, e.g. word processors, compilers, web browsers, etc.
- Users: Individuals, machines, or other computers.
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Description
This quiz covers the fundamental concepts of operating systems and the structure of computer systems. It highlights the roles of hardware, operating systems, application programs, and users in the computing environment. Test your understanding of how these components interact and achieve efficient system operation.
