When a Computer System's Files Are Automatically Duplicated on a Second

question 87

Multiple Choice

When a computer system's files are automatically duplicated on a second data storage system as they are changed,the process is referred to as

• A)real-time mirroring.
• B)batch updating.
• C)consistency control.
• D)double-secure storage.

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Definitions:

Universal Generalization

A logical principle stating that what is true of each member of a class or group is true of the class as a whole.

Existential Generalization

A logical operation that infers the existence of at least one member of a domain that satisfies a given predicate.

Existential Instantiation

A logical principle stating that the existence of at least one instance of a variable within a domain can be concluded from a statement asserting something about that variable.

Universal Instantiation

A logical rule used in deductive reasoning stating that what is true of all members of a class is true of any specific member.