Which of the following best describes data redundancy? a. A condition where data contains fields of different values b. A condition in which a set of data contains unnecessarily duplicated data c. A condition where data sets contain no duplicated fields d. A condition in which a set of data contains data that is unique

B

Explanation:

Data redundancy is a condition created within a database or data storage technology in which the same piece of data is duplicated (held in two separate places).

Whenever data is repeated, this basically constitutes data redundancy. Sometimes, this cn be by accident, but it is also done deliberately for backup and recovery purposes.

Cheers

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)