Ruby on Rails Basics

WEBrick is Ruby's built-in HTTP server library and serves as the default development server for Rails applications. While production environments typically use more performant servers like Puma or Unicorn, WEBrick is included with Ruby and requires no additional configuration for development work.

Ruby on Rails is a web application framework written in Ruby, an interpreted language that runs across multiple operating systems like Linux, macOS, and Windows. Thus, applications built with it are platform independent in terms of deployment environment capabilities.

Ruby is the programming language itself, while Ruby on Rails is a web application framework built using Ruby. The question incorrectly states that Ruby on Rails is a general-purpose language; Rails is specifically designed for web development, whereas Ruby is the general-purpose object-oriented language.

Ruby is a dynamic, object-oriented programming language created by Yukihiro Matsumoto. It emphasizes simplicity and productivity, with an elegant syntax that is natural to read and easy to write. Ruby on Rails is a framework built using Ruby, not the language itself.

Rails is a web application framework written in Ruby. It provides structure for database, web service, and web page development. A programming language (A) is what you write code IN, not what gives you web scaffolding.

Rails follows Agile principles like convention over configuration, DRY (Don't Repeat Yourself), and rapid iterative development. Waterfall (A) is rigid and sequential, Spiral (C) emphasizes risk analysis - neither match Rails' philosophy.

Rails uses Model-View-Controller (MVC) architecture: Models handle data/business logic, Views handle presentation, Controllers handle user input and coordinate. SOA (A) is service-oriented, MVP (B) is a simplified variant, DODAF (D) is military enterprise architecture.

Rails uses Model-View-Controller (MVC) architecture: Models handle data/business logic, Views handle presentation, Controllers handle user input and coordinate. SOA (A) is service-oriented, MVP (B) is a simplified variant, DODAF (D) is military enterprise architecture.

Rails uses Model-View-Controller (MVC) architecture: Models handle data/business logic, Views handle presentation, Controllers handle user input and coordinate. SOA (A) is service-oriented, MVP (B) is a simplified variant, DODAF (D) is military enterprise architecture.

Yukihiro Matsumoto (often called Matz) created and designed the Ruby programming language. Guido van Rossum created Python, Larry Wall created Perl, and David Heinemeier Hansson created the Ruby on Rails framework.

Ruby's reference implementation (MRI) is written in C. This allows Ruby to run on any platform with a C compiler. Java, C#, and COBOL are not the implementation language of Ruby.

Rails is written in Ruby itself (a 'self-hosting' framework). The Rails codebase is pure Ruby, which contributes to its expressiveness and developer productivity.

WEBrick (included in Ruby's standard library) is the default development server for Rails. Mongrel (A) was popular historically, Apache (B) is production-grade, Tomcat (D) is for Java.

Ruby is a general-purpose, object-oriented programming language. It can be used for web development, scripting, data processing, and more. A framework (B) provides structure for specific types of applications.

Rails is a web application framework that provides structure for building database-backed web applications. It is not a programming language (A) - you write Ruby code that uses the Rails framework.

Ruby on Rails follows the Agile lifecycle model with its emphasis on iterative development, rapid prototyping, and convention over configuration. The framework supports continuous integration and frequent deployments. Waterfall is too rigid, Spiral is risk-focused, and 'A and B' is incorrect.

Ruby on Rails follows the MVC (Model-View-Controller) architecture pattern, which separates application logic, UI, and input. SOA is for service-oriented systems, MVP is a different pattern, and DODAF is for enterprise architecture frameworks.