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CHAPTER 1, Chapter 3, CHAPTER 2 - Coggle Diagram
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Chapter 3
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goal of protection
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To ensure that each shared resource is used only in accordance with system policies, which may be set either by system designers or by system administrators.
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Note that protection systems only provide the mechanisms for enforcing policies and ensuring reliable systems
Concept of the File
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A file could be a program (source code or executable), text files, word documents, image files, audio/video files etc.
Each of these files differs in the kind of information they hold and also the way in which the information is stored.
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CHAPTER 2
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Swapping Technique
Swap – out operation: by copying its instruction and data onto a disk. This operation frees the area of memory that was allocated to the process.
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