Use Case Diagram Quiz

What is the primary purpose of a use case diagram?

• To show data flow between systems

• To model the dynamic behavior of the system

• To capture functional requirements of a system

• To design the database schema

Who or what is represented by an "actor" in a use case diagram?

• A system function

• A user or another system interacting with the system

• A piece of data

• A software component

Which of the following is NOT a valid relationship in a use case diagram?

• Include

• Extend

• Generalization

• Aggregation

What symbol is used to represent an actor in a use case diagram?

• Rectangle

• Stick figure

• Diamond

• Circle

In a use case diagram, the "include" relationship means that:

• One use case is optional for another

• One use case is always executed as part of another

What is the purpose of the "extend" relationship?

• To reuse common functionality in multiple use cases

• To describe optional behavior that can extend a base use case

• To indicate a subclass relationship between use cases

• To specify the data flow between use cases

Which of the following statements is true about actors in a use case diagram?

• An actor can only be a human user

• An actor represents any external entity interacting with the system

• Actors are always connected using "extend" relationships

• Multiple actors cannot interact with the same use case

Which element represents a system boundary in a use case diagram?

• A stick figure

• A rectangle enclosing all use cases

• A dashed line

• An ellipse

How do you represent a use case in a diagram?

• As a stick figure

• As a rectangle

• As an ellipse

• As a diamond

Which of the following is an example of a use case?

• "User"

• "Log in"

• "Database"

• "API Gateway"