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Questions and Answers
What is an operating system?
What is an operating system?
A program that acts as an intermediary between a user of a computer and the computer hardware.
Which of the following is not an example of an operating system?
Which of the following is not an example of an operating system?
The kernel is the only part of the operating system that runs at all times.
The kernel is the only part of the operating system that runs at all times.
True
What does the shell in an operating system do?
What does the shell in an operating system do?
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What type of operating system allows multiple users to access the system simultaneously?
What type of operating system allows multiple users to access the system simultaneously?
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What is the role of an operating system as a resource allocator?
What is the role of an operating system as a resource allocator?
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The ___________ is concerned with the operation and control of I/O devices.
The ___________ is concerned with the operation and control of I/O devices.
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Which of these components is not considered part of the computer system?
Which of these components is not considered part of the computer system?
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What are some functionalities of an operating system?
What are some functionalities of an operating system?
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Study Notes
Course Overview
- Course Title: Operating Systems
- Course Code: YCS5001
- Total Contact Hours: 36
- Category: Professional Core
- Credits: 3 (3 lecture hours per week)
- Pre-requisites: Data Structures and Algorithms, Computer Organization and Architecture
Learning Objectives
- Understand the operating system's role as an interface between application programs and hardware.
- Explore the operating system's management of computer resources.
- Enhance skills for managing large software projects through operating system knowledge.
Course Outcomes
- CO1: Explain how operating systems function as an interface between hardware and software.
- CO2: Differentiate between processes and threads, including scheduling methods.
- CO3: Utilize synchronization tools to address the critical section problem.
- CO4: Classify and explain memory management techniques, especially virtual memory.
- CO5: Apply data structures knowledge in the implementation of file systems on secondary storage.
Module 1: Introduction to Operating Systems
- Define functionalities of operating systems and the hardware/software interface.
- Trace the evolution of operating systems: from batch processing to multi-programmed, time-sharing, real-time, and distributed systems.
- Understand Simultaneous Peripheral Operations On-Line (SPOOL) and its significance.
- Discuss protection and security, including user/supervisory mode, privileged instructions, and system calls.
What is an Operating System?
- Acts as an intermediary between users and computer hardware.
- Comprises a collection of system programs that control computer operations.
- Examples include UNIX, Mach, MS-DOS, Windows variants, MacOS, VMS, MVS, and VM.
Computer System Components
- Hardware: Provides basic computing resources—CPU, memory, I/O devices.
- Operating System: Manages and coordinates hardware usage across different application programs and users.
- Application Programs: Define how system resources solve computing problems (e.g., compilers, databases, video games).
- Users: Can be people, machines, or other computers.
User vs. System View of Operating Systems
- User View: Focuses on individual users maximizing resource use and ease of use.
- System View: Emphasizes control and management of resource execution, preventing errors, and handling I/O device operations.
Operating System Functions
- Resource Allocator: Manages and allocates resources accordingly.
- Control Program: Oversees the execution of user programs and manages I/O devices.
- Kernel: The core program that runs continuously, overseeing system operations while application programs are executed.
Kernel and Shell
- OS Components:
- Kernel: Active, interacts with hardware, and manages resources (includes device drivers, DLL files, system files).
- Shell: Functions as the command interpreter, providing user access to system commands.
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Description
Test your knowledge on the role of operating systems as an interface between software and hardware. This quiz covers essential concepts such as processes, threads, memory management, and synchronization tools. Evaluate your understanding of operating system principles and their application in real-world software projects.
