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In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE.
- Boundary tags ,is a status descriptor for a memory area.
- It consists of an ordered pair giving allocation status of the area;whether it is free or allocated.
- Boundary tags are identical tags stored at the start and end of memory area.
- when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.
- a)1,2 only
- b)1,3 only
- c)1,4 only
- d)1,2,3,4
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
In External fragmentation,merging of free memory areas using boundary ...
External Fragmentation and Boundary Tags
External fragmentation is a common problem in memory management, where free memory areas become scattered throughout the memory space, making it difficult to allocate large contiguous blocks of memory. One solution to this problem is merging of free memory areas using boundary tags.
Boundary tags are special markers that are used to keep track of the status of a memory area. They consist of an ordered pair of values, which indicate whether the area is currently allocated or free.
Identical Tags at the Start and End
Boundary tags are stored at the start and end of a memory area, and they are identical. This allows the kernel to quickly check the status of neighboring areas when a memory area becomes free.
When a memory area becomes free, the kernel checks the boundary tags of its neighboring areas to see if they are also free. If they are, the kernel can merge these areas into a single contiguous block of free memory, eliminating external fragmentation.
Advantages of Boundary Tags
Boundary tags have several advantages over other memory management techniques. For example:
- They are easy to implement and require little overhead.
- They allow for efficient merging of free memory areas, reducing external fragmentation.
- They are compatible with a wide range of memory allocation algorithms, including first-fit, best-fit, and worst-fit.
Conclusion
In summary, boundary tags are a simple and effective solution to the problem of external fragmentation in memory management. They allow for efficient merging of free memory areas, reducing wasted memory and improving performance.
External fragmentation is a common problem in memory management, where free memory areas become scattered throughout the memory space, making it difficult to allocate large contiguous blocks of memory. One solution to this problem is merging of free memory areas using boundary tags.
Boundary tags are special markers that are used to keep track of the status of a memory area. They consist of an ordered pair of values, which indicate whether the area is currently allocated or free.
Identical Tags at the Start and End
Boundary tags are stored at the start and end of a memory area, and they are identical. This allows the kernel to quickly check the status of neighboring areas when a memory area becomes free.
When a memory area becomes free, the kernel checks the boundary tags of its neighboring areas to see if they are also free. If they are, the kernel can merge these areas into a single contiguous block of free memory, eliminating external fragmentation.
Advantages of Boundary Tags
Boundary tags have several advantages over other memory management techniques. For example:
- They are easy to implement and require little overhead.
- They allow for efficient merging of free memory areas, reducing external fragmentation.
- They are compatible with a wide range of memory allocation algorithms, including first-fit, best-fit, and worst-fit.
Conclusion
In summary, boundary tags are a simple and effective solution to the problem of external fragmentation in memory management. They allow for efficient merging of free memory areas, reducing wasted memory and improving performance.
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In External fragmentation,merging of free memory areas using boundary ...
Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.
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In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer?
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In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer?.
In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In External fragmentation,merging of free memory areas using boundary tags.which of the following statement stands TRUE. Boundary tags ,is a status descriptor for a memory area. It consists of an ordered pair giving allocation status of the area;whether it is free or allocated. Boundary tags are identical tags stored at the start and end of memory area. when an area of memory becomes free ,the kernel checks the boundary tags of its neighboring areas.a)1,2 onlyb)1,3 onlyc)1,4 onlyd)1,2,3,4Correct answer is option 'D'. Can you explain this answer?.
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