Important Trivia Quiz On Design Pattern
Here is an Important Trivia Quiz on Design Pattern that is guaranteed to refresh your memory of the topic. A design pattern is basically a solution that is given to a commonly occurring problem in software if it not fully developed software. Take up the quiz and be sure to refer to your book on some of the questions you get wrong!
Questions and Answers
- 1.
____ methods retrieve and update attribute values.
- A.
Overloaded
- B.
B. Get and set
- C.
Constructor
- D.
Data
Correct Answer
B. B. Get and setExplanation
Get and set methods are used to retrieve and update attribute values in object-oriented programming. The get method is used to retrieve the value of an attribute, while the set method is used to update or modify the value of an attribute. These methods provide a way to access and manipulate the attributes of an object, ensuring encapsulation and data integrity. By using get and set methods, the attributes of an object can be accessed and modified in a controlled and consistent manner.Rate this question:
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- 2.
The prototype pattern is a ____ pattern.
- A.
a. structural class-level
- B.
b. creational object-level
- C.
c. creational class-level
- D.
d. behavioral object-level
Correct Answer
B. b. creational object-levelExplanation
The prototype pattern is a creational object-level pattern. This pattern involves creating objects by cloning or copying existing objects, rather than creating new objects from scratch. It allows for the creation of new objects with different initial values or configurations, while avoiding the overhead of creating new objects from scratch.Rate this question:
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- 3.
Which of the following is a responsibility of a view layer class?
- A.
a. Display electronic forms and reports.
- B.
b. Establish and maintain connections to the database.
- C.
c. Prepare persistent classes for storage to the database.
- D.
d. Process all business rules with appropriate logic.
Correct Answer
A. a. Display electronic forms and reports.Explanation
The responsibility of a view layer class is to display electronic forms and reports. This means that the view layer class is responsible for presenting the user interface to the user, allowing them to interact with the application and view the necessary information in the form of electronic forms and reports. This responsibility does not involve establishing and maintaining connections to the database, preparing persistent classes for storage, or processing business rules with appropriate logic.Rate this question:
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- 4.
In a communication diagram, a(n) ____ always directly follows the sequence number.
- A.
a. equal sign
- B.
Semicolon
- C.
Colon
- D.
Dash
Correct Answer
C. ColonExplanation
In a communication diagram, a colon always directly follows the sequence number. This is because the colon is used to separate the sequence number from the message or action being performed by the object in the diagram. It helps to clearly indicate the order of communication between objects and ensures that the diagram is easily understandable.Rate this question:
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- 5.
Communication diagrams and sequence diagrams are both ____ diagrams, and they capture ____ information.
- A.
a. interaction, the same
- B.
b. interaction, different
- C.
c. data flow, the same
- D.
d. data flow, different
Correct Answer
A. a. interaction, the sameExplanation
Communication diagrams and sequence diagrams are both interaction diagrams, as they both depict the interactions between objects in a system. They capture the same information, which includes the messages exchanged between objects and the order in which these messages occur.Rate this question:
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- 6.
The ____ pattern is a behavioral object-level pattern.
- A.
Singleton
- B.
Proxy
- C.
Bridge
- D.
Strategy
Correct Answer
D. StrategyExplanation
The strategy pattern is a behavioral object-level pattern that allows different algorithms or strategies to be selected at runtime. It defines a family of algorithms, encapsulates each one, and makes them interchangeable. This pattern promotes loose coupling between the client and the algorithms, as the client can switch between strategies without modifying its code.Rate this question:
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- 7.
Which of the following is a responsibility of a data access layer class?
- A.
a. Accept input data.
- B.
b. Create problem domain (persistent) classes.
- C.
c. Disconnect gracefully from the database.
- D.
d. Process all business rules with appropriate logic.
Correct Answer
C. c. Disconnect gracefully from the database.Explanation
A data access layer class is responsible for managing the connection between the application and the database. It is responsible for establishing a connection to the database, executing queries or commands to retrieve or update data, and closing the connection when it is no longer needed. Disconnecting gracefully from the database ensures that any resources are released properly and any pending transactions are committed or rolled back. This helps to maintain the integrity and efficiency of the database operations.Rate this question:
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- 8.
In a communication diagram, true/false conditions are contained in ____.
- A.
Braces
- B.
Parentheses
- C.
c. quotation marks
- D.
Brackets
Correct Answer
D. BracketsExplanation
In a communication diagram, true/false conditions are contained in brackets. Brackets are commonly used to enclose conditions or expressions in programming languages, and in the context of a communication diagram, they serve the same purpose. They help to clearly define and represent the conditions or expressions being communicated between different elements or actors in the diagram.Rate this question:
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- 9.
Design patterns became a widely accepted object-oriented design technique in 1996 when the ____ published Elements of Reusable Object-Oriented Software.
- A.
a. Group of Five
- B.
b. MIT Media Lab
- C.
c. Object-Oriented Consortium
- D.
d. Gang of Four
Correct Answer
D. d. Gang of FourExplanation
In 1996, the book "Elements of Reusable Object-Oriented Software" was published, which introduced design patterns as a widely accepted object-oriented design technique. This book was written by a group of four authors, Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, who are commonly referred to as the Gang of Four (GoF). Therefore, the correct answer is d. Gang of Four.Rate this question:
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- 10.
____ is a design principle to segregate classes into separate components based on the primary focus of the classes.
- A.
a. Realization of use cases
- B.
b. Separation of responsibilities
- C.
c. Dependency relationships
- D.
Indirection
Correct Answer
B. b. Separation of responsibilitiesExplanation
Separation of responsibilities is a design principle that involves dividing classes into separate components based on their primary focus. This helps to ensure that each class is responsible for a specific task or functionality, making the code more modular and easier to understand and maintain. This principle promotes better organization and reduces the complexity of the system by avoiding classes that have multiple responsibilities.Rate this question:
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- 11.
A(n) ____ diagram in UML is simply a high-level diagram that allows designers to associate classes of related groups.
- A.
a. entity-relationship
- B.
Package
- C.
Message
- D.
d. use case controller
Correct Answer
B. PackageExplanation
A package diagram in UML is a high-level diagram that allows designers to associate classes of related groups. It is used to organize and structure the elements of a system, such as classes, interfaces, and other packages. The diagram visually represents the relationships and dependencies between these elements, making it easier to understand and manage the system's architecture.Rate this question:
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- 12.
Over the last few years, powerful ____ (IDE) tools have been developed to help programmers construct systems.
- A.
a. Internet development entity
- B.
b. Internet development environment
- C.
c. integrated development entity
- D.
d. integrated development environment
Correct Answer
D. d. integrated development environmentExplanation
Over the last few years, powerful integrated development environment (IDE) tools have been developed to help programmers construct systems. An IDE is a software application that provides comprehensive facilities to computer programmers for software development. It typically consists of a source code editor, build automation tools, and a debugger. IDEs make it easier for programmers to write, test, and debug code by providing a unified interface and a set of integrated tools. Therefore, option d, integrated development environment, is the correct answer.Rate this question:
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- 13.
Which of the following is a responsibility of a domain layer class?
- A.
a. Display electronic forms and reports.
- B.
b. Establish and maintain connections to the database.
- C.
c. Capture input events such as clicks, rollovers, and key entry.
- D.
d. Process all business rules with appropriate logic.
Correct Answer
D. d. Process all business rules with appropriate logic.Explanation
The responsibility of a domain layer class is to process all business rules with appropriate logic. This means that the domain layer class is responsible for implementing the specific rules and logic that govern the behavior and operations of the business domain it represents. This includes enforcing constraints, validating data, and performing any necessary calculations or transformations. The other options listed (displaying electronic forms and reports, establishing and maintaining connections to the database, and capturing input events) are typically responsibilities of other layers or components within an application architecture.Rate this question:
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- 14.
The singleton pattern has the same basic logic as the ____ method pattern.
- A.
Adapter
- B.
Factory
- C.
Builder
- D.
Observer
Correct Answer
B. FactoryExplanation
The singleton pattern has the same basic logic as the factory method pattern. Both patterns involve creating objects, but the singleton pattern ensures that only one instance of a class is created and provides a global point of access to it, while the factory method pattern delegates the responsibility of creating objects to subclasses.Rate this question:
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- 15.
Developing ____ diagrams is at the heart of object-oriented detailed design.
- A.
Method
- B.
Interaction
- C.
c. design pattern
- D.
Artifact
Correct Answer
B. InteractionExplanation
In object-oriented detailed design, the development of interaction diagrams is crucial. These diagrams depict how objects interact with each other to accomplish a specific task or functionality. They illustrate the flow of messages and communication between objects, helping to visualize the dynamic behavior of the system. By creating interaction diagrams, designers can effectively plan and organize the interactions between objects, ensuring the smooth functioning of the system.Rate this question:
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- 16.
A(n) ____ frame is similar to an if-then-else statement or switch statement, which allows the firing of different sets of messages.
- A.
Loop
- B.
Rpt
- C.
Alt
- D.
Opt
Correct Answer
C. AltExplanation
An "Alt" frame is similar to an if-then-else statement or switch statement, which allows the firing of different sets of messages. This means that based on certain conditions, different sets of messages can be executed.Rate this question:
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- 17.
____ is the process of elaborating the detailed design with interaction diagrams of a particular use case.
- A.
a. Use case realization
- B.
b. Use case control
- C.
c. Design patterning
- D.
d. Separation of responsibilities
Correct Answer
A. a. Use case realizationExplanation
Use case realization is the process of elaborating the detailed design with interaction diagrams of a particular use case. This involves identifying the classes, objects, and their interactions that are necessary to implement the use case. It helps in understanding how the use case will be implemented in the system and ensures that the design aligns with the requirements and goals of the use case. Use case realization is an important step in the software development process as it helps in translating the high-level use case into a detailed and implementable design.Rate this question:
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- 18.
When a message is sent from an originating object to a destination object, in programming terms it means that the originating object is invoking a ____ on the destination object.
- A.
Lifeline
- B.
Method
- C.
Sequence
- D.
Class
Correct Answer
B. MethodExplanation
When a message is sent from an originating object to a destination object in programming, it means that the originating object is invoking a method on the destination object. A method is a set of instructions or code that defines the behavior of an object. By invoking a method, the originating object is requesting the destination object to perform a specific action or behavior.Rate this question:
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- 19.
The differences between programming languages and database languages have partially driven the trend to a ____ design.
- A.
Procedural
- B.
Schematic
- C.
Multilayer
- D.
d. single-layer
Correct Answer
C. MultilayerExplanation
The differences between programming languages and database languages have partially driven the trend to a multilayer design. This means that the design of systems and applications is becoming more complex and layered, with different programming and database languages being used for different layers. This allows for better separation of concerns and modularity, making it easier to develop and maintain large-scale software systems.Rate this question:
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- 20.
In OO two-layer designs, the Structured Query Language (SQL) statements to access a database are part of the ____ layer.
- A.
a. business logic
- B.
View
- C.
Middleware
- D.
Separation
Correct Answer
A. a. business logicExplanation
In OO two-layer designs, the Structured Query Language (SQL) statements to access a database are part of the business logic layer. The business logic layer is responsible for implementing the business rules and logic of an application. It handles the processing of data and communicates with the data layer, which includes the database. Therefore, the SQL statements used to access the database are included in the business logic layer.Rate this question:
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Nov 16, 2023Quiz Edited by
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Dec 06, 2010Quiz Created by
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