BWI-OOM 2.Semester

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This flashcard set covers university-level computer science concepts, focusing on UML diagrams like class, sequence, and communication diagrams, as well as use case modeling and object-oriented principles. It delves into relationships, behaviors, and specifications within systems, making it invaluable for students and professionals aiming to master software design and analysis. The multiple-choice format helps reinforce understanding of key terms and practices.

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Sprache

Englisch

Kategorie

Informatik

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Universität

Erstellt / Aktualisiert

24.06.2016 / 24.06.2016

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What is generalization?

It defines a hierarchy of abstractions in which a superclass inherits from one or more subclasses.

Generalization describes the “is part of”-relationship.

Generalization is the ability to hide many different implementations behind a single interface.

Generalization defines a hierarchy of abstractions in which a subclass inherits from one or more superclasses.

An object has NO / NONE...

identity

behaviour

character

state

An object can represent a …. entity.

hardware

conceptual

chemical

structural

Which one is NOT part of a class compartment?

relationships (connections)

structure (attributes)

class name

behavior (operations)

What’s NOT an aim of visual modeling?

Visual modeling helps to visualize a system as we want it to be.

It shows the decisions we should make in the future.

Visual modeling gives a template that guides us in constructing a system.

It permits to specify the structure or behavior of a system.

Encapsulation is a basic principle of...

visual modeling

modeling

an object

object orientation

Which one of the following statements is NOT one of the four principles of modeling?

The best models are connected to reality.

A single model is sufficient.

Levels of precision may differ.

The choice of model is important.

A mechanism / model element of the UML, which can contain other model elements, is called…

polymorphism

package

multiple inheritance

operation

A Use Case Model is used to....

communicate with the sponsor.

identify the platform requirements.

identify the development requirements.

communicate with end users and experts.

A Supplementary Specification contains the...

functionality, usability, ability, performance, supportability and design constraints of a system.

functionality, usability, reliability, performance, traceability and design constraints of a system.

functionality, usability, reliability, performance, supportability and liability of a system.

functionality, usability, reliability, performance, supportability and design constraints of a system.

The name of a Use Case...

could be the same name of another Use Case.

must not be several words in length.

should indicate what is achieved by the interaction with the actor.

indicate what the system technical should achieve.

One Flow of Event of a Use Case can have…

one Basic Flow and one to many Alternative Flows.

one Basic Flow and many Alternative Flows.

one Basic Flow and zero to many Alternative Flows.

many Basic Flows and many Alternative Flows.

Actors can be found / are findable in the...

Problem Statement

Use Case Model

Activity Diagram

Glossary

An actor is NOT…

a giver of information.

a passive information recipient.

a human.

part of the system.

What’s NOT part of a Use Case Model?

System boundaries

Actor

Links

Use Case

Which of the following is NOT included in a Use Case Specifications?

Use Case Diagrams

Links

Activity Diagrams

Flow of Events

What’s NOT an important point to detail the Basic Flow of a Use Case?

Number and title each step

Describe the steps

Describe the steps again in the Alternative Flows

Structure the flow into steps

Should you model the “Log in “ as a Use Case?

Yes, because “Log in” is a function of the system.

No, because “Log in” is an “outstanding” function of the system.

Yes, because in many cases “Log in” captures a complex behavior and it is included in other Use Cases.

No, because it does not produce results of value to an Actor.

What is the connection / relation between a Pre- and a Postcondition?

Both, a Pre- and a Postcondition have every time to be described in the Use Case Specification.

A Postcondition of one Use Case can be the Precondition for another Use Case.

A Postcondition of one Use Case has every time to be the Precondition for another Use Case.

A Postcondition describes the state of the system at the begin of the Use Case and a Precondition describes its state at the end of the Use Case.

What’s NOT a benefit of a Use Case Model?

A Use Case facilitates the hardware-decisions.

A Use Case is easy to understand.

A Use Case aids the team communication and understanding of the system.

A Use Case facilitates the agreement with the customer.

How can you handle repetitive behavior in a Use Case Specification?

Repetitive behavior can be handled by the description of a Subflow.

Repetitive behavior can be handled by describing it in the Glossary.

Repetitive behavior can be handled by the description of an Alternative Flow.

Complex repetitive behavior should be described repetitive in the Basic Flow.

What means CRUD?

Cancel, Read, Update and Delete

Carried, Read, Update and Develop

Creatable, Reusable, Usability and Development

Create, Read, Update and Delete

What’s the main difference between an Alternative Flow and a Subflow?

An Alternative Flow allows the internal reuse of requirements, unlike a Subflow.

An Alternative Flow increases the clarity, unlike a Subflow.

A Subflow returns always to the line, after it was called and it is called explicitly, unlike an Alternative Flow.

An Alternative Flow returns always to the line, after it was called and it is called explicitly, unlike a Subflow.

The difference between an object and an input/ output pin is, that...

a pin shows, which in- or output is required by an action and an object node shows only, that the object is not yet available.

a pin shows, which in- or output is required by an action and an object node shows only, that the object is available.

a pin shows, which pre- or postcondition is required for an action and an object shows only, that the object is available.

an object shows, which in- or output is required by an action and a pin shows only, that the object is available.

An action is...

noted as an Activity Diagram.

a state, that does something to the behavior of a system.

a function, that does something to the state of a system.

noted as an Use Case Diagram.

A time event models...

the duration of one action.

a waiting period or a time interval.

the date and time.

a sending or a receiving event.

A decision is used to...

execute a different sequence of actions, depending on a condition.

join the merged flows at the end of the conditional behavior.

execute parallel sequences of actions, depending on conditions.

join the brached flows at the end of the conditional behavior.

The parallel occurrence of actions means, that...

they will not needfully finish at the exact same time.

they will finish one after the other.

they will finish at the exact same time.

they can not be finished at the exact same time.

A Use Case has …. Control Class(es).

one to many

exactly one

zero

zero to many

A Control Class…

models information that is long-lived (persistent).

controls the key concepts of the system.

controls the behavior of a Use Case.

models the interaction between the system’s surroundings and its inner workings.

A pitfall, when identifying nouns, to find Entity Classes, could be that…

only important objects will be identified.

several terms may refer to the same object.

the language is too clear.

one term refers to exactly one object.

Which one of the following is NOT an Analysis Class type (Stereotype)?

Entity

Boundary

View

Control

Classes should NOT have…

a name, which is redundant with the name of another class.

a descriptive name.

a clear description.

a set of related responsibilities.

Boundary Classes can NOT be…

User-interface classes

Device-interface classes

System-interface classes

Controller-interface classes

Potential sources for finding Entity Classes are the…

Use Case Model, Activity Diagram and Glossary.

Glossary, Activity Diagram and Use Case Specifications.

Glossary, Business Domain Model and Use Case Specifications.

Sequence Diagram, Activity Diagram and Glossary.

Boundary Classes can be found in the...

Activity Diagram.

Use Case Model.

Glossary.

Use Case Description.

Which diagram type is NOT part of the Interaction Diagrams?

Timing Diagram

Sequence Diagram

Activity Diagram

Communication Diagram

An association, between two communication partners in the Communication Diagram is called…

relationship

message

object

link

Which element is NOT part of the Collaboration Diagram?

link

actor

object

use case

The MOST IMPORTANT connection between Sequence Diagram and Communication Diagram is, that…

the Sequence Diagram can be converted to the Communication Diagram, without losing any information.

they have exactly the same notation elements.

they show both the execution occurrence of messages.

the Communication Diagram can be converted to the Sequence Diagram, without losing any information.

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