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Ruby on Rails interview questions

Ruby on Rails interview questions.

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1.

What Is ORM In Rails?

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2.

Explain what is rake in Rails?

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3.

Explain what is Ruby on Rails?

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4.

Mention what is Rails Migration?

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5.

Explain what is ORM (Object-Relationship-Model) in Rails?

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6.

Explain what is the role of sub-directory app/controllers and app/helpers?

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7.

Explain what is Rails Active Record in Ruby on Rails?

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8.

Mention what are the limits of Ruby on Rails?

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9.

Mention what is the role of Rails Controller?

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10.

What is the use of load and require in Ruby?

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11.

What Do You Mean By Render And Redirect_to?

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12.

What Are Helpers And How To Use Helpers In ROR?

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13.

What Are The Various Components Of Rail?

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14.

How Is Visibility Of Methods Changed In Ruby (encapsulation)?

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15.

What do you mean by the term Scaffolding and what sort of advantages the Ruby can offer when it comes to same?

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16.

What Is MVC? And How It Works?

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17.

Explain how you define Instance Variable, Global Variable and Class Variable in Ruby?

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18.

How Many Types Of Relationships Does A Model Has?

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19.

Mention what are the positive aspects of Rails?

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20.

Mention what is the difference between a gem and a plugin in Ruby?

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21.

How Many Types Of Associations Relationships Does A Model Have?

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22.

Explain what is a class library in Ruby?

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23.

List out what can Rails Migration do?

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24.

What Is The Difference Between Nil And False In Ruby?

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25.

What is the purpose of the resources method in the code snippet below?

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26.

Mention what is the difference in scope for these two variables: @@name and @name?

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27.

What Things We Can Define In The Model?

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28.

How should you use nested layouts?

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29.

What is the purpose of the rakefile available in the demo directory in Ruby?

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30.

Mention what is the function of garbage collection in Ruby on Rails?

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31.

How does Ruby on Rails use the Model View Controller (MVC) framework?

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32.

What is the use of Destructive Method?

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33.

Mention what is the purpose of RJs in Rails?

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34.

What Are Filters?

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35.

Mention what is the difference between the Observers and Callbacks in Ruby on Rails?

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36.

Explain what is Polymorphic Association in Ruby on Rails?

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37.

Explain what is Interpolation in Ruby?

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38.

What exactly are Harnesses and Fixtures in the Ruby?

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39.

What is the difference between &&, || operators and "and, or"?

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40.

Can you explain the difference between ActiveSupport’s “HashWithIndifferentAccess” and Ruby’s “Hash”?

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41.

What is the difference between symbol and string?

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42.

What Is The Difference Between Delete And Destroy?

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43.

What Is A Proc?

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44.

Mention what is the difference between calling super() and super call?

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45.

Practical test: Genres of music

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46.

Explain Ruby on Rails Exception Handling

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47.

What is the difference between string and text in Rails?

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48.

What is the Difference Between Gem And Plugin?

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49.

What is ActiveJob? When should we use it?

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50.

What Is The Difference Between "Save" And "Save!"?

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51.

Is Rails Scalable?

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52.

What are Strong Parameters?

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53.

What Do You Mean By Naming Convention In Rails?

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54.

Does Ruby Support Single Inheritance/multiple Inheritance Or Both?

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55.

What is Rack?

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56.

What Is The Flash?

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57.

How Many Types Of Callbacks Available In Ror?

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58.

Explain the difference between Page, Action, Fragment, Low-Level, SQL caching types.

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59.

What is the difference between content_for and yield?

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60.

How would you choose between Belongs_to And Has_one?

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61.

What Are Filters? And How Many Types Of Filters Are There In Ruby?

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62.

What is Dynamic Finders?

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63.

What sort of problems you have faced with Ruby on Rails and how do you think the same can affect the projects?

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64.

What is the best thing which you find about the Ruby on Rail so far?

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65.

How To Use Two Databases Into A Single Application?

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66.

What is a Rails engine?

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67.

Node.js vs Ruby on Rails. Which would you choose?

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68.

What is Asset Pipeline?

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69.

How To Find Second Max Element From Database?

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70.

How to check if a specific key is present in a hash or not?

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71.

How to rollback a specific migration?

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72.

How Do I Find Only Duplicate Entries In A Database Table?

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11 Reactive Systems interview questions and answers for software engineers

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34 Microservices interview questions and answers for software engineers

Microservice architecture – a variant of the service-oriented architecture structural style – arranges an application as a collection of loosely coupled services. In a microservices architecture, services are fine-grained and the protocols are lightweight. Here is a list of coding intervie...

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7 Layering & Middleware interview questions for developers

Middleware in the context of distributed applications is software that provides services beyond those provided by the operating system to enable the various components of a distributed system to communicate and manage data. Middleware supports and simplifies complex distributed application...

. Layering & Middleware
55 Docker interview questions and answers for software engineers

Docker is a set of platform as a service products that use OS-level virtualization to deliver software in packages called containers. Here is a list of coding interview questions on Docker to help you get ready for your next data structures interview in 2021.

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23 Databases interview questions and answers for software engineers

A database is an organized collection of data, generally stored and accessed electronically from a computer system. Where databases are more complex they are often developed using formal design and modeling techniques. Here is a list of coding interview questions on Databases to help you g...

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21 Concurrency interview questions and answers for software engineers

In computer science, concurrency is the ability of different parts or units of a program, algorithm, or problem to be executed out-of-order or in partial order, without affecting the final outcome. Here is a list of coding interview questions on Concurrency to help you get ready for your n...

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13 CAP Theorem interview questions and answers for software engineers

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