Django Interview Questions For Freshers
Django Interview Questions For Freshers - Tips for a Successful Job Interview
Django is a popular open-source web framework written in Python used to develop complex and secure web applications. As a fresh graduate or someone new to Django, it is important to prepare for interviews by understanding the fundamentals of the framework. Some common Django interview questions for freshers may cover topics such as the basics of Django architecture, models, views, templates, forms, and deployment. It is also essential to have a good understanding of Python, HTTP, and database concepts. Being able to demonstrate your knowledge and problem-solving skills through practical examples and projects will help you excel in Django interviews.
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1 - What is Django and how does it work?
Answer: Django is a high level web framework written in Python that allows developers to quickly and easily build web applications. It follows the Model Template View (MTV) architectural pattern, where Models represent the data, Templates represent the user interface, and Views handle the logic and communication between models and templates.
2) What are the features of Django?
Answer: Some of the key features of Django include:
Object relational mapper (ORM) for database integration
Scalability and reusability of components
Built in user authentication system
URL routing and request handling
Template engine for designing user interfaces
Robust security measures
Extensive documentation and community support
3) What is the difference between a project and an app in Django?
Answer: A project is the entire web application created using Django, while an app is a smaller, self contained component within the project. A project can contain multiple apps, and each app can be shared between projects. Apps are usually reusable and have a specific function, such as user management or blog functionality.
4) How does Django handle URL routing?
Answer: In Django, URL routing is handled by the URLconf (URL configuration) module. This module contains a list of patterns that map URLs to corresponding views or functions within the views.py file. Django also allows for the use of named URLs, making it easier to maintain and update URL mappings.
5) What is a Django template?
Answer: A Django template is an HTML file that contains placeholders for dynamic content. These placeholders are filled in by the corresponding view function using the context data provided. Templates allow for the separation of design and logic, making it easier to create and maintain user interfaces.
6) How does Django handle database migrations?
Answer: Django uses its built in ORM to handle database migrations. Migrations are essentially instructions for how to modify the database structure based on changes made to models. Django tracks these changes and allows for automatic and manual migrations to ensure the database structure stays up to date with the models.
7) What is the role of middleware in Django?
Answer: Middleware in Django is a framework for hooking into the request/response lifecycle. It allows developers to add or modify functionality before or after a request is processed. Some common uses of middleware include URL routing, authentication, and error handling.
8) What is the purpose of the settings.py file in a Django project?
Answer: The settings.py file in a Django project contains all the configurations and settings for that particular project. This includes database settings, installed apps, middleware, URL mappings, media and static file locations, and more. Developers can customize these settings to fit the needs of their project.
9) How does Django handle user authentication?
Answer: Django has a built in authentication system that allows for user registration, login, and logout functionality. It also provides user permissions and groups, making it easier to manage user access to different parts of the web application. Developers can customize the authentication system to fit the needs of their project.
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10) What is the purpose of the manage.py file in a Django project?
Answer: The manage.py file is a command line utility that comes with every Django project. It allows developers to perform tasks such as creating database migrations, starting the development server, and running tests. The manage.py file also provides various options for managing the project via the command line.
11) How does Django handle security?
Answer: Django has several built in security measures to protect web applications from common attacks such as cross site scripting (XSS), cross site request forgery (CSRF), and SQL injections. These measures include input sanitization, CSRF tokens, and password hashing. Developers can also add third party security libraries for additional protection.
12) How does Django support internationalization and localization?
Answer: Django has a built in internationalization (i18n) and localization (l10n) framework that allows developers to create web applications in different languages. It includes tools for translating and formatting text, handling date and time formats, and managing different language versions of templates.
13) What is Django REST framework?
Answer: Django REST framework (DRF) is a powerful, flexible, and highly customizable toolkit for building RESTful APIs. It is built on top of Django and provides serializers, authentication, permissions, pagination, versioning, and more. DRF is widely used for creating APIs in Django projects.
14) How is testing handled in Django?
Answer: Django has a built in testing framework that allows for unit, integration, and functional testing. Developers can create tests using the TestCase class and various assertion methods. Django also provides tools for creating and managing test data, making it easier to test different scenarios within the application.
15) What is the role of the Django admin site?
Answer: The Django admin site is an automatically generated user interface for managing a project's data. It allows administrators to perform CRUD (create, read, update, delete) operations on models without writing any code. Developers can customize the admin site by creating ModelAdmin classes for their models.
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