Question: ________ technique may split memory area at the start of the free list repeatedly,so free memory area become smaller with time.
Answer:
the allocator may not have any large free memory area left to satisfy large memory request.Also several free memory areas may become unusably small.
MCQ: ________ technique may split memory area at the start of the free list repeatedly,so free memory area become smaller with time.
Explanation:
the allocator may not have any large free memory area left to satisfy large memory request.Also several free memory areas may become unusably small.
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Related Questions
- 1. ________ technique avoids needless splitting of large memory area.
- 2. ________ technique incurs higher allocation overhead
- 3. ________ technique avoids splitting the same free area repeatedly also avoids allocation overhead.
- 4. Memory fragmentation can be defined as
- 5. External fragmentation occurs when a
- 6. Internal fragmentation occurs when a
- 7. memory fragmentation results in_______
- 8. In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. <ol> <li>Boundary tags ,is a status descriptor for a memory area.</li> <li>It consists of an ordered pair giving allocation status of the area;whether it is free or allocated.</li> <li>Boundary tags are identical tags stored at the start and end of memory area.</li> <li>when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.</li> </ol>
- 9. A relation called the 50-percent rule holds
- 10. Which of following statements stands true of a relation called 50-percent rule. <ol> <li>the number of free area is half the number of allocated area ie. m=n/2</li> <li>it helps in estimating the size of the free list</li> <li>it also gives us method of estimating the free area in the memory at any time</li> <li>if sf is the average size of free area of memory,the total free memory is sf×n/2</li> </ol>
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