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ERGO Technology & Services Interview Questions and Answers

Updated 5 Feb 2024

Q1. What happens when you enter URL in the chrome URL bar?

Ans.

Entering a URL in the Chrome URL bar initiates a request to the server hosting the website.

  • Chrome sends a request to the server hosting the website

  • The server responds with the website's HTML, CSS, and JavaScript files

  • Chrome renders the website using the received files

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Q2. Which are all the design patterns used in the Django? Explain MVC Design Pattern

Ans.

Django uses Model-View-Controller (MVC) design pattern.

  • Django follows the Model-View-Template (MVT) pattern, which is a variation of MVC.

  • Model represents the data and business logic, View handles user interface and Template defines how data is presented.

  • MVC separates the application into three interconnected components: Model, View, and Controller.

  • Model represents the data and business logic, View handles user interface and Controller manages the flow between Model and View.

  • E...read more

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Q3. What design patterns are you familiar with?

Ans.

I am familiar with several design patterns including MVC, Singleton, Factory, and Observer.

  • MVC separates the application into Model, View, and Controller components.

  • Singleton ensures only one instance of a class is created.

  • Factory creates objects without specifying the exact class to be created.

  • Observer allows objects to be notified of changes to a subject.

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Q4. What is OAuth 2.0? And how it works?

Ans.

OAuth 2.0 is an authorization framework that allows third-party applications to access user data without sharing passwords.

  • OAuth 2.0 is used to grant access to resources on behalf of a user.

  • It uses access tokens to grant access to resources.

  • OAuth 2.0 has four roles: resource owner, resource server, client, and authorization server.

  • Examples of OAuth 2.0 providers include Google, Facebook, and Twitter.

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Q5. What is JWT? Why is it used?

Ans.

JWT stands for JSON Web Token. It is used for secure transmission of information between parties.

  • JWT is a compact, URL-safe means of representing claims to be transferred between two parties.

  • It is used for authentication and authorization purposes.

  • JWT consists of three parts: header, payload, and signature.

  • The header contains the algorithm used to sign the token.

  • The payload contains the claims or information being transmitted.

  • The signature is used to verify the integrity of t...read more

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Q6. Explain Django architecture

Ans.

Django follows Model-View-Controller (MVC) architectural pattern.

  • Django has a high-level architecture that follows the Model-View-Controller (MVC) architectural pattern.

  • The Model layer represents the database schema and data access layer.

  • The View layer is responsible for rendering the HTML content.

  • The Controller layer handles the user requests and manages the flow of data between the Model and View layers.

  • Django also includes a URL dispatcher, which maps URLs to views.

  • Django'...read more

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