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Questions and Answers
What function does multitasking in an operating system perform?
What function does multitasking in an operating system perform?
- It allows multiple CPUs to execute tasks simultaneously.
- It requires user input for each task before execution.
- It restricts the user to one application at a time.
- It enables a single CPU to manage multiple tasks over time. (correct)
Which type of operating system is designed for one user at a time?
Which type of operating system is designed for one user at a time?
- Multitasking OS
- Network OS
- Single User OS (correct)
- Multi-user OS
What is a characteristic of a multi-user operating system?
What is a characteristic of a multi-user operating system?
- It operates without any graphical interface.
- It requires a high CPU speed to function.
- It allows multiple users to operate the computer interactively. (correct)
- It is only accessible to a single user at any moment.
Which of the following best describes a command-line interface?
Which of the following best describes a command-line interface?
What is the primary function of an operating system?
What is the primary function of an operating system?
What is a primary disadvantage of a command-line interface?
What is a primary disadvantage of a command-line interface?
Which interface is best suited for users who struggle to recall commands?
Which interface is best suited for users who struggle to recall commands?
What does processor scheduling involve?
What does processor scheduling involve?
What does WIMP stand for in the context of graphical user interfaces?
What does WIMP stand for in the context of graphical user interfaces?
How does the operating system identify resources being requested?
How does the operating system identify resources being requested?
What is the role of memory management in an operating system?
What is the role of memory management in an operating system?
Which of the following is NOT a commonly used type of user interface?
Which of the following is NOT a commonly used type of user interface?
Which of the following best describes the function of interrupt handling?
Which of the following best describes the function of interrupt handling?
How are operating systems classified?
How are operating systems classified?
What does input/output management ensure?
What does input/output management ensure?
What characterizes a single program operating system?
What characterizes a single program operating system?
Flashcards
Multitasking Operating System
Multitasking Operating System
A type of operating system that allows a single CPU to handle multiple programs simultaneously by dividing processing time into slices. Each program receives a small time slice to run, creating the illusion of simultaneous execution.
Single User Operating System
Single User Operating System
An operating system designed for use by a single person at a time, running only one application at a time.
Multi-user Operating System
Multi-user Operating System
An operating system that allows multiple users to interact with the computer simultaneously, also known as a multi-access OS.
User Interface
User Interface
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Command-line Interface
Command-line Interface
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Menu-driven Interface
Menu-driven Interface
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Graphical User Interface (GUI)
Graphical User Interface (GUI)
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WIMP
WIMP
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What is an Operating System?
What is an Operating System?
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What resources are managed by the OS?
What resources are managed by the OS?
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What is Processor Scheduling?
What is Processor Scheduling?
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How does the OS manage resources?
How does the OS manage resources?
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Explain memory management.
Explain memory management.
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What is I/O Management?
What is I/O Management?
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How does the OS manage Communication?
How does the OS manage Communication?
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What role does the OS play in Error Handling?
What role does the OS play in Error Handling?
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Study Notes
The Operating System
- An operating system (OS) is the main program controlling user application execution and providing access to computer hardware and software resources.
- Key resources under OS control include the processor, main memory, storage devices, input/output devices, and communication devices.
Functions of the OS
- Processor Scheduling: Allocates processor time to jobs based on priority.
- Resource Allocation: Assigns unique identification numbers (IRQs) to resources for the OS to manage.
- Memory Management: The OS determines which tasks remain in memory and which to move to secondary storage.
- Input/Output Management: Coordinates between I/O devices and peripherals to ensure secure data transmission.
- Communication Control and Management: Manages communication devices and creates an environment for communication protocols.
- Error Handling: Monitors system status, checks for user, hardware and software errors, and alerts users about illegal operations or failures.
- Interrupt Handling: Manages interruptions to normal program execution, often due to critical requests, stopping the current process, and returning control to the interrupted process.
Types of Operating Systems
- Classification by Number of Tasks:
- Single Program OS: Processes one application at a time, suitable for users who need a simple interaction with one program (e.g., MS DOS)
- Multitasking OS: Allows a single CPU to seemingly run multiple applications concurrently by rapidly switching between programs (e.g., most modern operating systems)
- Classification by Number of Users:
- Single User OS: Designed for one user at a time.
- Multi-user OS: Enables multiple users to interact with the computer simultaneously, often used in server environments.
- Classification by Interface:
- Command-line Interface (CLI): Users type commands to interact with the operating system.
- Menu-driven Interface: Presents users with options from a menu for interaction.
- Graphical User Interface (GUI): Provides users with windows, icons, buttons, and other graphical elements which can simplify operations.
Choosing an Operating System
- Factors to Consider: Hardware configuration, type of computer, application software requirements, user friendliness, documentation, cost, reliability, processor and hardware support, and number of supported users.
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