Class Diagram

Which of the following questions are irrelevant when identifying involved actors.

• Who needs the systems support for their everyday work?

• Who or what is interested in the systems results?

• Which hardware is available for the users of the system?

What is the true fact about the above use case diagram.

• Go for lunch has to be executed every time when withdraw gets executed.

• the arrow (extends) points in the wrong direction

• withdraw cash inherits the behavior from go for lunch

• person going for luch may withdraw cash

Which use case is a valid use case when you want to design for an online book shop?

• Enter credit card details

• Enter book title

• Do not order a book

• check availability

The association between an actor and a use case

• might be ternary

• is modeled with a dashed line.

• is modeled with a directed edge

• is binary

A mother cooks dinner together with her daughter & mother also always has to mix the cocktails (Refer the above use case diagram)

• True

• False

What is true about UML stereotypes?

• A stereotype is used for extending the UML language.

• A stereotyped class must be abstract.

• The stereotype {frozen} indicates that the UML element cannot be changed.

• UML Profiles can be stereotyped for backward compatibility.

What type of association exist between books and library in the above class diagram

• Aggregation

• Composition

• Inheritance

• Realisation

What type of association exist in the above class diagram.

• Aggregation

• Composition

• Inheritance

• Realisation

What type of association exist in the above class diagram.

• Aggregation

• Composition

• Inheritance

• Realisation

What type of association is expressed in the above class diagram.

• Every Instructor has one or more Students

• Every student can associate with multiple teachers

• More number of students can be associated with each Instructor

• None of the above