Which of the following statements is false with respect to a use case?

In a DFD, external entities are represented by:

Which relationship/construct in a use case diagram indicates an optional behavior?

Which of the following involves a graphical representation of the processes that manage data between a system, its environment, and the relevant components?

Which parts must a requirement model contain?

Sequence Diagrams will be *most helpful* and *most necessary* in an SRS for:

A range check is a data validation check that ____.

A list of events or activities recorded in the sequence in which they occur is called a(n) ____.

A key feature of an enterprise system is that _________.

A _____ is a command that tells an object to perform a certain method.

A(n) ____ defines specific tasks that an object can perform.