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Questions and Answers
What is the function of main memory in a computer system?
What distinguishes static loading from dynamic loading?
What happens as processes are loaded and removed from memory?
What is the purpose of virtual memory?
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Which statement best describes frame allocation algorithm?
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Study Notes
- Main memory is the internal physical memory in a computer system, distinguishing it from external mass storage devices like disk drives.
- Programs are loaded into the main memory for execution. They can be statically loaded in their entirety or dynamically loaded in parts when needed.
- Fragmentation occurs when free memory space is broken into small pieces due to the loading and removal of processes. These small pieces may prevent processes from being allocated to memory, resulting in unused memory blocks.
- External fragmentation is when the free memory is broken into small pieces, spread out over the memory, making it unusable for larger processes.
- Internal fragmentation occurs when a process is not able to utilize all the allocated memory due to the memory management system's inefficiencies.
- Two common memory allocation strategies for managing the memory: page replacement algorithm and frame allocation algorithm.
- Page replacement algorithm determines which pages to replace when the memory is full and a new page needs to be loaded.
- Frame allocation algorithm is used to manage the memory by dividing the main memory into fixed-sized frames, where each frame holds an entire process.
- The goal of these algorithms is to minimize fragmentation, improve memory usage, and ensure efficient use of the main memory.
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Description
Test your knowledge of memory management with this quiz covering basic main memory allocation strategies, virtual memory, page replacement algorithms, and frame allocation algorithms. Learn about the functions of main memory, static and dynamic loading, internal and external fragmentation, and different allocation and replacement algorithms.
