Operating System an der National University Of Science And Technology | Karteikarten & Zusammenfassungen

Lernmaterialien für Operating System an der National University of Science and Technology

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What services does OS provide?

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1. Program development
2. Program execution
3. Access to I/O devices
4. Controlled access to files
5. System access
6. Error detection and response
7. Accounting

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What is OS?

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Operating systems are those programs that interface the machine with the applications programs

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Efficiency (OS Objectives)

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OS allows computer system resources to be used in an efficient manner

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Main function of OS    

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Dynamically allocate the share system resources to the executing programs

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DIFFERENT ARCHITECTURAL APPROACHES

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  • Microkernel Architecture
  • Multithreading
  • Symmetric Multiprocessing
  • Distributed Operating Systems
  • Object-Oriented Design
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Program development (OS Service)

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OS provides application program development tools: editors, debuggers and other utilities to assist program development

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Access to I/O devices (OS Service)

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I/O device requires its own peculiar set of instructions or control signals for operation. OS provides a uniform interface that hides these details

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Error Detection & response (OS Service)

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Variety of errors can occur while a computer system is running. These include internal and external hardware errors.
In each case, the OS must provide a response that clears the error condition with the least impact on running applications

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Evolution stages of OS?

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1. Serial processing
2. Simple batch systems
3. Mutliprogrammed batch systems
4. Time-sharing systems

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Controlled access to files (OS Service)

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For file access, the OS must reflect a detailed understanding of the nature and structure of the I/O device (disk drive, tape drive). Controlled access in term of multiple users.

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Who controls the allocation of main memory?

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memory management hardware in the processor and the OS jointly control the allocation of main memory

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Convenience    

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OS makes a computer system more convenient to use

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  • 46 Studierende
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Q:

What services does OS provide?

A:

1. Program development
2. Program execution
3. Access to I/O devices
4. Controlled access to files
5. System access
6. Error detection and response
7. Accounting

Q:

What is OS?

A:

Operating systems are those programs that interface the machine with the applications programs

Q:

Efficiency (OS Objectives)

A:

OS allows computer system resources to be used in an efficient manner

Q:

Main function of OS    

A:

Dynamically allocate the share system resources to the executing programs

Q:

DIFFERENT ARCHITECTURAL APPROACHES

A:
  • Microkernel Architecture
  • Multithreading
  • Symmetric Multiprocessing
  • Distributed Operating Systems
  • Object-Oriented Design
Mehr Karteikarten anzeigen
Q:

Program development (OS Service)

A:

OS provides application program development tools: editors, debuggers and other utilities to assist program development

Q:

Access to I/O devices (OS Service)

A:

I/O device requires its own peculiar set of instructions or control signals for operation. OS provides a uniform interface that hides these details

Q:

Error Detection & response (OS Service)

A:

Variety of errors can occur while a computer system is running. These include internal and external hardware errors.
In each case, the OS must provide a response that clears the error condition with the least impact on running applications

Q:

Evolution stages of OS?

A:

1. Serial processing
2. Simple batch systems
3. Mutliprogrammed batch systems
4. Time-sharing systems

Q:

Controlled access to files (OS Service)

A:

For file access, the OS must reflect a detailed understanding of the nature and structure of the I/O device (disk drive, tape drive). Controlled access in term of multiple users.

Q:

Who controls the allocation of main memory?

A:

memory management hardware in the processor and the OS jointly control the allocation of main memory

Q:

Convenience    

A:

OS makes a computer system more convenient to use

Operating System

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