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Questions and Answers
In a time-sharing operating system, how is CPU time allocated among multiple users?
In a time-sharing operating system, how is CPU time allocated among multiple users?
- The OS prioritizes users based on their system privileges, giving more time to administrators.
- CPU time is allocated dynamically based on the current memory usage of each user.
- Each user is allocated a fixed time slice to prevent monopolization of resources. (correct)
- The OS processes tasks in batches, allocating time based on predefined job priorities.
What is the primary role of an operating system in device management?
What is the primary role of an operating system in device management?
- To encrypt data stored on storage devices for enhanced security.
- To manage device drivers and facilitate communication between hardware and software. (correct)
- To optimize the physical placement of hardware components within the system.
- To ensure only authorized personnel can physically access hardware.
Which of the following scenarios would most benefit from using a Real-Time Operating System (RTOS)?
Which of the following scenarios would most benefit from using a Real-Time Operating System (RTOS)?
- Controlling the braking system in an automobile. (correct)
- Managing file storage and retrieval on a personal computer.
- Processing large datasets for scientific research.
- Running a web server that handles numerous concurrent requests.
How does an operating system contribute to system security and access control?
How does an operating system contribute to system security and access control?
Which type of operating system is specifically designed to manage multiple computers so they appear as a single, cohesive system to the user?
Which type of operating system is specifically designed to manage multiple computers so they appear as a single, cohesive system to the user?
Flashcards
Operating System (OS)
Operating System (OS)
System software that manages computer hardware and software resources.
Process Management
Process Management
Managing the execution of multiple programs (processes) at the same time.
Memory Management
Memory Management
Allocating and deallocating memory space for programs.
File System Management
File System Management
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Real-Time OS (RTOS)
Real-Time OS (RTOS)
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Study Notes
- An Operating System (OS) is system software, managing computer hardware and software resources.
- The OS provides services for computer programs.
- It acts as an intermediary between users and computer hardware.
- It ensures efficient execution of programs.
Functions of an Operating System
- Process Management manages the simultaneous execution of multiple programs (processes).
- Memory Management allocates and deallocates memory for programs.
- File System Management organizes and controls access to data stored in files.
- Device Management controls hardware components like keyboards, printers, and disk drives.
- Security and Access Control protects data from unauthorized access.
- User Interface (UI) provides an interface (CLI or GUI) for users to interact with the computer.
- Networking manages network connections and communication.
Types of Operating Systems
- Batch OS executes batches of jobs without user interaction.
- Time-Sharing OS allows multiple users to use the system simultaneously.
- Real-Time OS (RTOS) processes data in real-time and is used in critical applications.
- Distributed OS manages multiple computers working as a single system.
- Embedded OS runs on specialized hardware like mobile phones, ATMs, and smart appliances.
- Common Operating Systems include Windows, macOS, Linux, and Android.
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Description
An operating system (OS) is system software that manages computer hardware and software resources. It provides services for computer programs and acts as an intermediary between users and computer hardware. The OS ensures efficient execution of programs by managing processes, memory, files, and devices.
