For 100-Percent Availability,online Transaction Processing Requires

question 28

Multiple Choice

For 100-percent availability,online transaction processing requires:

• A)high-capacity storage.
• B)a multi-tier server network.
• C)fault-tolerant computer systems.
• D)dedicated phone lines.
• E)a digital certificate system.

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Definitions:

Statistical Significance

Indicates that the observed results are unlikely to have occurred by chance, according to a predefined level of significance.

Type I Error

The statistical mistake of rejecting a true null hypothesis, also known as a "false positive."

Type II Error

The error that occurs when one fails to reject a false null hypothesis, also known as a false negative.

Power

The probability that a statistical test will correctly reject a false null hypothesis, or the test's sensitivity to detecting an effect.