Question 1

____ are programs responsible for an application's user interface, presenting data in a predefined format.
A) Views
B) Models
C) Controllers
D) Records

Accepted Answer

Views are responsible for presenting data in a predefined format, enabling users to interact with an application's user interface. Models are responsible for managing data and database interaction, while controllers handle user input and control the flow of the application. Records typically represent a single instance of a data object within a database.

Question 2

You can customize a Ruby on Rails application in a variety of ways, including which of the following?
A) Edit your application's HTML code
B) Modify the CSS style sheets to alter the application's appearance
C) Change the application's database management system
D) All of the above

Accepted Answer

All of the above choices are correct. Ruby on Rails is a flexible framework that allows developers to customize their applications by editing the HTML code, modifying the CSS style sheets, and changing the database management system. This allows developers to create unique and personalized applications that meet their specific needs.

Question 3

The MVC architecture facilitates the ____ principle by keeping the programming logic that controls application execution separate from the programming logic that manages the presentation of data.
A) Convention over Configuration
B) Restful
C) DRY
D) Stateful

Accepted Answer

The MVC architecture supports the DRY (Don't Repeat Yourself) principle by separating concerns, which helps in reducing redundancy and improving maintainability.

Question 4

The easiest way to install Ruby on Rails on a computer running Windows is through the fxri-interactive Ruby and Help Console.

Accepted Answer

The easiest way to install Ruby on Rails on Windows is by using a Ruby installer such as RubyInstaller, and then installing Rails through the command prompt with the command "gem install rails". The fxri-interactive console is not a recommended method for installing Ruby on Rails on Windows.

Question 5

Railties provide a framework for adding email services to Ruby on Rails applications, enabling applications to send email and receive email.

Accepted Answer

Railties is a core component of Ruby on Rails that provides the framework for extending Rails applications and engines, handling initialization processes, and integrating with Rails components. It does not specifically provide email services; Action Mailer is the component responsible for handling email sending and receiving in Rails applications.

Question 6

____ tie together different models and views, processing application input and output.
A) Models
B) Views
C) Controllers
D) Records

Accepted Answer

Controllers tie together different models and views, processing application input and output.

Question 7

____ provides a framework for adding email services to Ruby on Rails applications, enabling applications to send email and receive email.
A) Action Mailer
B) Active Resource
C) Railties
D) Active Support

Accepted Answer

Action Mailer is specifically designed for adding email services to Ruby on Rails applications, allowing them to send and receive email. Active Resource is used for creating RESTful web services that integrate with external APIs, Railties is a component of the Ruby on Rails framework that helps with the creation of plugins and generators, and Active Support provides foundational support and utility classes for the Ruby on Rails framework.

Question 8

Ruby on Rails is built on a MVC architecture, which organizes your applications into which three primary components?
A) Models, views, and controllers
B) Models, views and containers
C) Makers, views, and controllers
D) Markers, view, and containers

Accepted Answer

Ruby on Rails is built on a Model-View-Controller (MVC) architecture, which separates an application into three primary components: Models, Views, and Controllers. The Model layer represents the application's data and business logic, the View layer represents the user interface, and the Controller layer handles user input, and communicates with the Model and View layers to respond to user requests. Therefore, choice A is the correct answer.

Question 9

____ are Ruby on Rails programs that manage the relationship between controllers and the application's database.
A) Views
B) Models
C) Controllers
D) Records

Accepted Answer

Models are specifically designed to manage the interaction between controllers and the database in a Ruby on Rails application. Views are responsible for rendering the user interface and controllers handle the flow of data between the models and the views. Records refer to individual entries in the database that are managed by the models.

Question 10

To work with Ruby on Rails, you need a basic understanding of which of the following?
A) HTML
B) Cascading style sheets (CSS)
C) Database management systems
D) All of the above

Accepted Answer

To work with Ruby on Rails, one needs to have a basic understanding of HTML and CSS, as they are used to layout and style web pages. Additionally, knowledge of database management systems is necessary since Ruby on Rails uses relational databases for data storage. Therefore, all of the above are necessary for working with Ruby on Rails.

Question 11

The data displayed by a view is updated based on the actions of ____.
A) Views
B) Models
C) Controllers
D) Records

Accepted Answer

The controllers are responsible for updating the data displayed in a view by interacting with the models and manipulating the data accordingly. Views simply display the data, and models represent the data and its manipulation. Records are individual pieces of data within a model and are not responsible for updating the view.

Question 12

Active Resource manages the connections between application objects and database tables, mapping local application objects to web resources.

Accepted Answer

Active Resource is a Rails library that maps RESTful resources located on an HTTP server with Ruby objects, allowing you to seamlessly integrate your Rails apps with the web. Active Resource manages the connections between application objects and RESTful web services and maps local application objects to web resources.

Question 13

Railties provide the program code (help scripts) that actually creates Ruby on Rails applications and ties everything together.

Accepted Answer

Railties indeed provide the program code that generates and links various components in a Ruby on Rails application.

Question 14

Which of the following commands can be used to keep Ruby on Rails up to date?
A) gem update
B) gem update rails
C) gem get rails
D) rubygem update rails

Accepted Answer

The command "gem update rails" is specifically for updating the Ruby on Rails framework to the latest version. The command "gem update" updates all installed gems to their latest versions, which may not necessarily include Ruby on Rails. The commands "gem get rails" and "rubygem update rails" are not valid commands.

Question 15

Which of the following commands is used to start the WEBrick web server?
A) script/start
B) start/script
C) script/server
D) script/webrick

Accepted Answer

The command "script/server" is used to start the WEBrick web server.

Question 16

Controllers are Ruby on Rails programs that manage the relationship between models and an application's database.

Accepted Answer

Controllers in Ruby on Rails manage the flow of data between models and views, handling user requests and defining application behavior, not directly managing the relationship between models and the database.

Question 17

Views are implemented via Ruby on Rails' ____ library, which defines presentation templates that are used in displaying data.
A) Action View
B) Active Record
C) Action Controller
D) Action Record

Accepted Answer

Views are implemented using Ruby on Rails' Action View library, which defines presentation templates for displaying data. Active Record is the library used for handling database interactions and modeling data, Action Controller is used for managing the flow of requests and responses, and Action Record is not a valid library in Ruby on Rails.

Question 18

Which of the following URLs can be used to access your computer's locally installed web server?
A) http://127.0.0.1:3000
B) http://127.0.0.0:2000
C) http://127.1.1.1.3000
D) http://127.0.0.1:1000

Accepted Answer

The IP address 127.0.0.1 is the loopback address for a computer, also known as localhost, which refers to the same computer that you are currently using. Therefore, accessing the locally installed web server through this IP address using a specified port number (in this case, 3000) is the correct option. The other options have invalid IP addresses or incorrect port numbers.

Question 19

____ Manages the connections between application objects and database tables, mapping local application objects to web resources.
A) Action Mailer
B) Active Resource
C) Railties
D) Active Support

Accepted Answer

Active Resource is a framework that manages the connections between application objects and database tables, mapping local application objects to web resources. It provides a way to interact with RESTful web services by defining classes that mirror the structure of remote resources. The other options, Action Mailer, Railties, and Active Support, are all frameworks within Ruby on Rails but do not directly relate to managing connections between application objects and databases.

Question 20

____ help maintain a separation between an application's programming logic and the presentation of its data.
A) Views
B) Models
C) Controllers
D) Records

Accepted Answer

The answer of ____ help maintain a separation between an...

Quiz 11: Ruby on Rails Web Development

____ are programs responsible for an application's user interface, presenting data in a predefined format.

You can customize a Ruby on Rails application in a variety of ways, including which of the following?

The MVC architecture facilitates the ____ principle by keeping the programming logic that controls application execution separate from the programming logic that manages the presentation of data.

The easiest way to install Ruby on Rails on a computer running Windows is through the fxri-interactive Ruby and Help Console.

Railties provide a framework for adding email services to Ruby on Rails applications, enabling applications to send email and receive email.

____ tie together different models and views, processing application input and output.

____ provides a framework for adding email services to Ruby on Rails applications, enabling applications to send email and receive email.

Ruby on Rails is built on a MVC architecture, which organizes your applications into which three primary components?

____ are Ruby on Rails programs that manage the relationship between controllers and the application's database.

To work with Ruby on Rails, you need a basic understanding of which of the following?

The data displayed by a view is updated based on the actions of ____.

Active Resource manages the connections between application objects and database tables, mapping local application objects to web resources.

Railties provide the program code (help scripts) that actually creates Ruby on Rails applications and ties everything together.

Which of the following commands can be used to keep Ruby on Rails up to date?

Which of the following commands is used to start the WEBrick web server?

Controllers are Ruby on Rails programs that manage the relationship between models and an application's database.

Views are implemented via Ruby on Rails' ____ library, which defines presentation templates that are used in displaying data.

Which of the following URLs can be used to access your computer's locally installed web server?

____ Manages the connections between application objects and database tables, mapping local application objects to web resources.

____ help maintain a separation between an application's programming logic and the presentation of its data.