What Is a Backup

question 23

Multiple Choice

What is a backup?

• A) An exact copy of a system's information
• B) The ability to get a system up and running in the event of a system crash or failure and includes restoring the information backup
• C) A computer system designed that in the event a component fails, a backup component or procedure can immediately take its place with no loss of service
• D) A backup operational mode in which the functions of a computer component (such as a processor, server, network, or database) is assumed by secondary system components when the primary component becomes unavailable through either failure or scheduled down time

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Definitions:

Total Cost

The aggregate amount of expenses incurred in the production of goods or services, including both fixed and variable costs.

Marginal Cost

The increase in total cost that arises from producing one additional unit of a good or service.

Average Variable Cost

The total variable costs divided by the quantity of output produced; it varies with output levels.

Average Total Cost

The per-unit production cost, calculated by dividing the overall production expenses by the number of units produced.