| 1. | Paging _________. |
| a. | solves the memory fragmentation problem |
| b. | allows modular programming |
| c. | allows structured programming |
| d. | avoids deadlock |
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Answer: (a).solves the memory fragmentation problem
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| 2. | Which of the following memory allocation scheme suffers from External fragmentation? |
| a. | Segmentation |
| b. | Pure demand paging |
| c. | Swapping |
| d. | Paging |
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Answer: (a).Segmentation
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| 3. | The problem of fragmentation arises in ________. |
| a. | Static storage allocation |
| b. | Stack allocation storage |
| c. | Stack allocation with dynamic binding |
| d. | Heap allocation |
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Answer: (d).Heap allocation
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| 4. | _________ allocates the largest hole (free fragmant) available in the memory. |
| a. | Best Fit |
| b. | Worst Fit |
| c. | First Fit |
| d. | None of the above |
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Answer: (b).Worst Fit
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| 5. | Thrashing occurs ________. |
| a. | when excessive swapping takes place |
| b. | when you thrash your computer |
| c. | whenever deadlock occurs |
| d. | when no swapping takes place |
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Answer: (a).when excessive swapping takes place
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| 6. | Thrashing ________. |
| a. | Reduces page I/O |
| b. | Decreases the degree of multiprogramming |
| c. | Implies excessive page I/O |
| d. | Improve the system performance |
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Answer: (c).Implies excessive page I/O
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| 7. | By which of following the problem of thrashing is significantly affected ? |
| a. | program size |
| b. | program structure |
| c. | primary storage |
| d. | secondary storage |
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Answer: (b).program structure
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| 8. | If the property of locality of reference is well pronounced in a program |
| a. | the number of page faults will be more |
| b. | the number of page faults will be less |
| c. | the number of page faults will same |
| d. | none of above |
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Answer: (b).the number of page faults will be less
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| 9. | Which one is true |
| a. | The linkage editor is used to edit programs which have to later link together |
| b. | The linkage editor links object module during compiling |
| c. | The linkage editor links objects modules and resolves external references between them before loading |
| d. | none of above |
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Answer: (c).The linkage editor links objects modules and resolves external references between them before loading
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| 10. | A high paging rate |
| a. | may cause a high I/O rate |
| b. | keeps the system running well |
| c. | is a symptom of too much processor activity |
| d. | always creates a slow system |
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Answer: (a).may cause a high I/O rate
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