Question 1

One technique for identifying behaviors is to search the use-case narrative for verb phrases.

Accepted Answer

Verb phrases in use-case narratives often describe actions or behaviors that the system or users perform, making them useful for identifying behaviors.

Question 2

A class responsibility collaboration (CRC) card is a popular tool for documenting the behaviors and collaborations for an object.

Accepted Answer

CRC cards are used in object-oriented design to outline the responsibilities of a class and how it collaborates with other classes.

Question 3

Sequence diagrams show us in great detail how the objects interact with each other in time sequence.

Accepted Answer

Sequence diagrams are used in software engineering to represent the order of interactions between objects over time, detailing the sequence of messages exchanged.

Question 4

In actor collaboration, the use case scenarios are acted out by the participants. The participants may assume the role of actors or object types that collaborate to process a hypothetical business event.

Accepted Answer

The answer of In actor collaboration, the use case scenarios...

Question 5

Two overarching goals of object-oriented design are high coupling and low cohesion.

Accepted Answer

The goals of object-oriented design are low coupling and high cohesion, which promote modularity and maintainability.

Question 6

Cohesion is the degree to which one class is connected to or relies upon other classes.

Accepted Answer

Cohesion refers to how closely related and focused the responsibilities of a single class or module are, not its connection to other classes.

Question 7

Ideally, object classes created for one information system should be able to be reused in other information systems.

Accepted Answer

Object classes are designed to be modular and reusable, allowing them to be utilized across different systems to promote efficiency and consistency.

Question 8

Reusability is why operating system-specific code and database specific code are often designed into system and persistence classes.

Accepted Answer

Operating system-specific code and database-specific code are often designed into system and persistence classes to enable reusability. This allows the code to be used in multiple applications, regardless of the operating system or database being used.

Question 9

A design pattern is a common solution to a given problem in a given context.

Accepted Answer

Design patterns are established solutions to recurring design problems in software development, providing a template for how to solve a problem in a particular context.

Question 10

One advantage of using design patterns is that they provide designers with a short-hand notation for discussing design issues.

Accepted Answer

Design patterns offer a common vocabulary and understanding, allowing designers to communicate complex design concepts efficiently.

Question 11

GOF behavioral patterns provide guidance on the way in which classes interact to distribute responsibility.

Accepted Answer

Behavioral patterns in the Gang of Four (GOF) design patterns focus on the interaction between classes and objects, distributing responsibilities and managing communication.

Question 12

GOF creational patterns provide guidance for designing classes to instantiate new objects.

Accepted Answer

The Gang of Four (GOF) creational patterns focus on ways to create objects, providing various mechanisms to instantiate objects in a manner suitable to the situation.

Question 13

GOF structural patterns provide guidance on how classes can be designed to form larger structures.

Accepted Answer

The Gang of Four (GOF) structural patterns focus on how classes and objects can be combined to form larger, more complex structures, facilitating code organization and flexibility.

Question 14

GOF structural patterns provide guidance on the way in which classes interact to distribute responsibility.

Accepted Answer

The answer of GOF structural patterns provide guidance on the...

Question 15

An object framework is a set of related, interacting objects that provide a well-defined set of services for accomplishing a task.

Accepted Answer

An object framework is designed to provide a reusable, extendable structure for software development, consisting of a set of interacting objects that work together to provide specific functionalities or services.

Question 16

A component is a group of objects packaged together into one unit. An example of a component is a dynamic link library (DLL) or executable file.

Accepted Answer

A component is indeed a collection of objects or functions that are packaged together, and DLLs or executable files are common examples of such components in software development.

Question 17

A communication diagram is similar to a sequence diagram. But while a sequence diagram focuses on the structural organization of objects in a network format, a communication diagram focuses on timing of messages.

Accepted Answer

A communication diagram focuses on the structural organization and interactions between objects, while a sequence diagram emphasizes the timing and order of messages.

Question 18

Communication diagrams depict the organizational units of programming code and how they interact.

Accepted Answer

Communication diagrams illustrate the interactions between objects or parts in a system, focusing on the sequence and flow of messages exchanged, rather than the organizational units of code.

Question 19

Deployment diagrams are also implementation type diagrams that describe the physical architecture of the hardware and software in the system. They depict software components, processors, and devices that make up the systems architecture.

Accepted Answer

Deployment diagrams are used in UML to show the physical arrangement of software and hardware components in a system, illustrating how software components are deployed on hardware nodes.

Question 20

A class that would have to change if the system was ported to another operating system would be a(n):
A) entity class
B) interface class
C) control class
D) persistence class
E) system class

Accepted Answer

A system class is typically responsible for interacting with the underlying operating system, so it would need to change if the system was ported to a different OS.

Quiz 18: Object-Oriented Design and Modeling Using the UML