When you convert an unnormalized table to a table in first normal form, the primary key of the table in first normal form is usually the concatenation of at least two columns.
Answer the following statement true (T) or false (F)
True
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Twisted-pair wire
a. is suitable only for voice communications b. is suitable for voice communications and data communications only if shielding is used c. may be used for voice and data communications d. is always the most expensive cabling solution
You are responsible for the design of a communications switch that has to provide 24/7 availability, but which is not safety-critical. Giving reasons for your answer, suggest an architectural style that might be used for this system.
What will be an ideal response?
____________________ is the process of checking user input data to make sure that it is complete and accurate.
Fill in the blank(s) with the appropriate word(s).
A database administrator would like to start encrypting database exports stored on the SAN, but the storage administrator warms that this may drastically increase the amount of disk space used by the exports. Which of the following explains the reason for the increase in disk space usage?
A. Deduplication is not compatible with encryption B. The exports are being stored on smaller SAS drives C. Encrypted files are much larger than unencrypted files D. The SAN already uses encryption at rest