ERGO Technology & Services Interview Questions and Answers

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

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

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.

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.

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