Programming Languages and Compilers

QTP (QuickTest Professional, now UFT) uses VBScript as its scripting language. 'VB' is correct as it refers to VBScript. TSL is for WinRunner, SQA Basic is for SQA Robot, and PERL is unrelated.

Ruby's reference implementation (MRI) is written in C. This allows Ruby to be portable and performant. Other implementations exist (JRuby in Java, IronRuby in C#), but the core Ruby interpreter is C-based.

Ruby on Rails is a web framework written in Ruby. Rails leverages Ruby's metaprogramming capabilities and follows Ruby conventions - it cannot be written in Java, C, or COBOL as it depends on Ruby's language features.

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 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.

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.

In C, adjacent string literals are concatenated during compilation. 'Kumar' 'Singh' becomes 'KumarSingh', and 'Bittoo' 'Roshan' becomes 'BittooRoshan'. The array contains: 'Ritesh', 'KumarSingh', 'Happy', 'BittooRoshan', 'Go' = 5 elements.

realloc expands existing allocation. Option A correctly uses realloc to resize ptr for 10 elements. Option B is missing assignment (memory leak), Option C uses malloc and adds to pointer (wrong), Option D only allocates 9 elements. Note: question uses 'ptr' in text but 'p' as variable name - minor inconsistency.