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Introduction to Memory Management Notes: Diploma in ICT

Institution: College Level

Course: Diploma in Information Technology

Content Category: Tutorials

Posted By: PENTAMRK

Document Type: PDF

Number of Pages: 37

Price: KES 200
 
    

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Summary

This document contains notes on Introduction to memory management in modern operating systems.

Brief Overview:

Memory Management
In a multiprogramming computer the operating system resides in part of memory and the rest is used by multiple processes.
The task of subdividing the memory not used by the operating system among the various processes is called memory management.

Memory management requirements
• Relocation - programs not loaded into a fixed point in memory but may reside in various areas.
• Protection - each process should be protected against unwanted interference by other processes either accidentally or intentionally. All memory references generated by a process must be checked at run time to ensure that they only reference memory that has been allocated to that process.
• Sharing – Protection mechanisms must be flexible enough to allow a number of processes to access the same area of memory. For example if a number of processes are executing the same program, it is advantageous to allow each program to access the same copy of the program.
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