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Explain how does OS play a role as an extended machine (abstraction) with an example? Explain the different levels of abstraction provided by OS

  1. Explain how does OS play a role as an extended machine (abstraction) with an example?  
  2. Explain the different levels of abstraction provided by OS for programmers to perform read-write operations on disk blocks?
  3. Explain how does OS play a role as a resource manager with an example?

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1 OS as an Extended Machine Abstraction An operating system OS acts as an extended machine by providing a layer of abstraction that simplifies and standardizes the interaction between software applica... blur-text-image

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