Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > If the property of locality of reference is w...
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If the property of locality of reference is well pronounced a program:
1. The number of page faults will be more.
2. The number of page faults will be less.
3. The number of page faults will remain the same.
4. Execution will be faster.
1. The number of page faults will be more.
2. The number of page faults will be less.
3. The number of page faults will remain the same.
4. Execution will be faster.
- a)1 and 2
- b)2 and 4
- c)3 and 4
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
If the property of locality of reference is well pronounced a program:...
If the property of locality of reference is well pronounced then the page to be accessed will be found in the memory more likely and hence page faults will be less. Also since access time will be only of the upper level in the memory hierarchy bence execution will be faster.
Most Upvoted Answer
If the property of locality of reference is well pronounced a program:...
Understanding Locality of Reference
Locality of reference is a principle that describes the tendency of a program to access a relatively small portion of its address space at any given time. This behavior can significantly influence the performance of programs, particularly in the context of virtual memory systems.
Effects on Page Faults
- Locality of reference leads to better use of cache and memory.
- Since programs tend to access the same set of data repeatedly, it reduces the chances of page faults.
- Fewer page faults mean that the system spends less time fetching data from disk, allowing for smoother execution.
Execution Speed
- Because locality of reference allows frequently accessed data to remain in memory, programs can run faster.
- The reduced overhead from fewer page faults means that the CPU can perform more computations in the same time frame.
Conclusion
Given the above points:
- Statement 1 (More page faults): Incorrect, as locality reduces the number of page faults.
- Statement 2 (Less page faults): Correct, because effective locality minimizes page replacement.
- Statement 3 (Page faults remain the same): Incorrect, locality improves performance.
- Statement 4 (Execution will be faster): Correct, as fewer page faults lead to quicker execution.
Thus, the correct answer is option 'B' (2 and 4). Locality of reference ultimately enhances performance by minimizing page faults and accelerating execution speed.
Locality of reference is a principle that describes the tendency of a program to access a relatively small portion of its address space at any given time. This behavior can significantly influence the performance of programs, particularly in the context of virtual memory systems.
Effects on Page Faults
- Locality of reference leads to better use of cache and memory.
- Since programs tend to access the same set of data repeatedly, it reduces the chances of page faults.
- Fewer page faults mean that the system spends less time fetching data from disk, allowing for smoother execution.
Execution Speed
- Because locality of reference allows frequently accessed data to remain in memory, programs can run faster.
- The reduced overhead from fewer page faults means that the CPU can perform more computations in the same time frame.
Conclusion
Given the above points:
- Statement 1 (More page faults): Incorrect, as locality reduces the number of page faults.
- Statement 2 (Less page faults): Correct, because effective locality minimizes page replacement.
- Statement 3 (Page faults remain the same): Incorrect, locality improves performance.
- Statement 4 (Execution will be faster): Correct, as fewer page faults lead to quicker execution.
Thus, the correct answer is option 'B' (2 and 4). Locality of reference ultimately enhances performance by minimizing page faults and accelerating execution speed.
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If the property of locality of reference is well pronounced a program:1. The number of page faults will be more.2. The number of page faults will be less.3. The number of page faults will remain the same.4. Execution will be faster.a)1 and 2b)2 and 4c)3 and 4d)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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