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–F–

Fault tolerance

The ability of a system (or system component) to continue normal operation despite the presence of hardware or software faults.

Feasibility

The extent to which the benefits of a new or enhanced system will exceed the total costs and also satisfy the business requirements.

Feasibility Study

A formal study to determine the feasibility of a proposed system (new or enhanced) in order to make a recommendation to proceed or to propose alternative solutions.

Field Test

Testing that is performed at the user site.

Fielded system

An operational system installed at the user site.

Full sequential

The systems development work pattern defined by life cycle phases described in SEP documentation (Chapter 10).

Functionality

The relative usefulness of a functional requirement as it satisfies a business need.

Functional baseline

The approved documentation that describes the functional characteristics of the system, subsystem, or component. See baseline.

Functional Configuration Audit

An audit to ensure that the functional requirements have been met by the delivered configuration item. See audit.

Functional requirement

A requirement that specifies a function (activity or behavior, based on a business requirement) that the system (or system component) must be capable of performing.

Functional Requirements Document

A formal document of the business (functional) requirements of a system; the baseline for system validation.

Functional Test

Testing that ignores the internal mechanism of a system (or system component) and focuses solely on the outputs generated in response to selected inputs and execution conditions. Same as black-box testing.

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