| 1. | Which of the following refers to the associative memory? |
| a. | the address of the data is generated by the CPU |
| b. | the address of the data is supplied by the users |
| c. | there is no need for an address i.e. the data is used as an address |
| d. | the data are accessed sequentially |
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Answer: (c).there is no need for an address i.e. the data is used as an address
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| 2. | Which of the following file name extension suggests that the file is Backup copy of another file ? |
| a. | TXT |
| b. | COM |
| c. | BAS |
| d. | BAK |
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Answer: (d).BAK
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| 3. | In memory management , a technique called as paging, physical memory is broken into fixed-sized blocks called ___________. |
| a. | Pages |
| b. | Frames |
| c. | Blocks |
| d. | Segments |
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Answer: (b).Frames
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| 4. | Disk scheduling involves deciding ? |
| a. | which disk should be accessed next |
| b. | the order in which disk access request should be made |
| c. | physical location of files |
| d. | type of disks a system should have |
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Answer: (b).the order in which disk access request should be made
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| 5. | Memory protection is normally done by |
| a. | the processor and the associated hardware |
| b. | the operating system |
| c. | the compiler |
| d. | the user program |
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Answer: (a).the processor and the associated hardware
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| 6. | Dynamic allocation of storage areas with VSAM files is accomplished by |
| a. | hashing |
| b. | control splits |
| c. | over flow areas |
| d. | relative recording |
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Answer: (b).control splits
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| 7. | Root directory of a disk should be placed |
| a. | at the fixed address in the main memory |
| b. | at a fixed location on the disk |
| c. | at the fixed location on system disk |
| d. | anywhere on the disk |
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Answer: (b).at a fixed location on the disk
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| 8. | CPU can access which type of memory directly? |
| a. | random-access memory |
| b. | magnetic disk |
| c. | magnetic tape |
| d. | None of the above |
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Answer: (a).random-access memory
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| 9. | What is the effect of using a larger block size in a fixed block size file system? |
| a. | It leads to poorer disk throughput and poorer disk space utilization |
| b. | It leads to poorer disk throughput but better disk space utilization |
| c. | It leads to better disk throughput and better disk space utilization |
| d. | It leads to better disk throughput and poorer disk space utilization |
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Answer: (d).It leads to better disk throughput and poorer disk space utilization
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| 10. | Consider a system with 32 bit virtual addresses and 1 kbyte page size. Why is it not possible to use one - level page tables for virtual to physical address translation? |
| a. | The amount of external fragmentation |
| b. | The amount of internal fragmentation |
| c. | The large computation overhead in the translation process |
| d. | The large memory overhead in maintaining page tables |
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Answer: (d).The large memory overhead in maintaining page tables
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