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Exam 6: Object Modeling

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Question 31

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In a class diagram, each class appears as a(n) _____, with the class name at the top, followed by the class's attributes and methods.

A) rectangle
B) circle
C) oval
D) triangle

E) None of the above
F) B) and C)

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Question 32

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The black box concept is an example of _____, which means that all data and methods are self-contained.

A) polymorphism
B) inheritance
C) encapsulation
D) use case modeling

E) A) and B)
F) All of the above

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Question 33

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_____ describe what objects need to know about each other, how objects respond to changes in other objects, and the effects of membership in classes, superclasses, and subclasses.

A(n) _____ resembles a verb and defines specific tasks that an object can perform.

A red Mustang is a(n) _____ of the CAR class.

When a use case diagram is created, the first step is to identify the system boundary, which is represented by a _____.

In a sequence diagram, a lifeline is identified by a _____ line.

Kevin, the trainee analyst at Lynach TechSystems, is in charge of allocating suitable Unified Modeling Language (UML) notations to a particular class diagram. -In a given diagram, Kevin is designing a relationship in which a given employee can have no payroll deductions or he/she can have many deductions. Which of the following notations should Kevin write to mark this relationship?

For each use case, a _____ in the form of a table is developed to document the name of the use case, the actor, a description of the use case, and so forth.

Use cases cannot interact with other use cases.

In a use case, an external entity, called a(n) _____, initiates a use case by requesting the system to perform a function or process.

Some objects might have a few attributes; others might have dozens.

What do relationships enable objects to do? What is the strongest kind of relationship? Walk through an example that demonstrates your understanding of the concept.

Inheritance enables an object, called a _____, to derive one or more of its attributes from a parent.

Explain a class diagram. Also, explain how a class diagram is like a data flow diagram (DFD).

An object, such as a bank account, can have a specific attribute called a(n) _____ that can be active, inactive, closed, or frozen.

Matching ​Identify the letter of the choice that best matches the phrase or definition. -This ensures consistency and provides common links so that once objects are described and used in one part of the design, they can be reused multiple times without further effort.

_____ describes how instances of one class relate to instances of another class.

Just as objects are similar to adjectives, attributes resemble verbs that describe what and how an object does something.

The line from the actor to the use case is called a(n) _____.