What is Flask in Python?

• A web framework
• A database
• A compiler
• A testing tool

Which command installs Flask?

• pip install flask
• install flask
• flask install
• setup flask

Flask is based on which programming language?

• JavaScript
• Java
• Python
• C++

What does @app.route('/') do?

• Deletes route
• Defines a URL route
• Starts the server
• Renders a template

What is the default port Flask runs on?

• 3000
• 8000
• 5000
• 8080

What is the purpose of Flask Blueprints?

• Code Formatting
• Project Packaging
• Code Reusability
• Response Caching

How do you register a Blueprint in Flask?

• app.use()
• app.register()
• app.add_url_rule()
• app.register_blueprint()

What does the application factory pattern help with?

• Single-file projects
• Static files
• App scalability and testing
• Blueprint routing

Which function is typically used to create the app in a factory pattern?

• init_app()
• create_app()
• start_app()
• run_app()

What is a Flask Middleware used for?

• Add styles
• Handle background jobs
• Intercept requests/responses
• Connect databases

What is the purpose of the Flask Application Factory pattern?

• Reduce routing
• Lazy database init
• Create apps dynamically
• None

In Flask, what is a Blueprint?

• A database config
• A template
• A reusable module
• A view class

Which function is typically used to register a Blueprint?

• add_blueprint()
• init_blueprint()
• register_blueprint()
• use_blueprint()

What is the use of before_request in Flask?

• Redirect users
• Run code before each request
• Modify headers
• Log error only

How can you handle 404 errors globally in Flask?

• Use abort(404)
• Use @app.errorhandler(404)
• Use redirect(404)
• Define 404.html