Disaster recovery
| A. | is needed by every installation |
| B. | is never needed |
| C. | varies in degree between installations |
| D. | requires off-site computer for immediate use |
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Option: C Explanation : Click on Discuss to view users comments. Gokulnath said: (3:40pm on Sunday 30th April 2017)
Answer: DThe remote system adds theseblocks to the file system and updates its pointers, and the new system then is aduplicate of the source system as of the time of the second snapshot. Repeatingthis process maintains the remote system as a nearly up-to-date copy of the firstsystem. Such replication is used for disaster recovery. Should the first systembe destroyed, most of its data are available for use on the remote system.
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System supports two types of file, which are
| A. | text files |
| B. | executable binary flies |
| C. | both (a) and (b) |
| D. | none of these |
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Option: C Explanation : Click on Discuss to view users comments. |
Wild-card specifiers
| A. | provide an easy way of finding groups of related files |
| B. | are only used when printing the contents of files |
| C. | can be used when writing a file |
| D. | allow several files to be read simultaneously |
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Option: A Explanation : Click on Discuss to view users comments. |
How many common file type are there?
| A. | nine |
| B. | six |
| C. | five |
| D. | two |
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Option: A Explanation : Click on Discuss to view users comments. |
The volatility of a file refers to
| A. | the number of records added or deleted from a file composed to the original number of records in that file |
| B. | efficiency with which non-sequential files are processed |
| C. | the extent where the records of the file are contiguous and in proximity to others |
| D. | percentage of records that has changed in a given time period. |
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Option: A Explanation : Click on Discuss to view users comments. |
