| 1. | Disadvantages of File systems to store data is: |
| a. | Data redundancy and inconsistency |
| b. | Difficulty in accessing data |
| c. | Data isolation |
| d. | All of the above |
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Answer: (d).All of the above
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| 2. | Which level of RAID refers to disk mirroring with block striping? |
| a. | RAID level 1 |
| b. | RAID level 2 |
| c. | RAID level 0 |
| d. | RAID level 3 |
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Answer: (a).RAID level 1
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| 3. | Optical disk technology uses |
| a. | Helical scanning |
| b. | DAT |
| c. | a laser beam |
| d. | RAID |
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Answer: (d).RAID
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| 4. | With multiple disks, we can improve the transfer rate as well by ___________ data across multiple disks. |
| a. | Striping |
| b. | Dividing |
| c. | Mirroring |
| d. | None of the above |
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Answer: (a).Striping
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| 5. | Which one of the following is a Stripping technique ? |
| a. | Byte level stripping |
| b. | Raid level stripping |
| c. | Disk level stripping |
| d. | Block level stripping |
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Answer: (d).Block level stripping
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| 6. | The RAID level which mirroring is done along with stripping is |
| a. | RAID 1+0 |
| b. | RAID 0 |
| c. | RAID 2 |
| d. | Both a and b |
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Answer: (d).Both a and b
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| 7. | Where performance and reliability are both important, RAID level ____ is used. |
| a. | 0 |
| b. | 1 |
| c. | 2 |
| d. | 0+1 |
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Answer: (d).0+1
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| 8. | Hardware RAID implementations permit _________; that is, faulty disks can be removed and replaced by new ones without turning power off. |
| a. | Scrapping |
| b. | Swapping |
| c. | Hot swapping |
| d. | None of the mentioned |
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Answer: (c).Hot swapping
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| 9. | ___________ is popular for applications such as storage of log files in a database system, since it offers the best write performance. |
| a. | RAID level 1 |
| b. | RAID level 2 |
| c. | RAID level 0 |
| d. | RAID level 3 |
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Answer: (a).RAID level 1
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| 10. | ______________ which increases the number of I/O operations needed to write a single logical block, pays a significant time penalty in terms of write performance. |
| a. | RAID level 1 |
| b. | RAID level 2 |
| c. | RAID level 5 |
| d. | RAID level 3 |
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Answer: (c).RAID level 5
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