3º DS_MOB_React Native and Expo Quiz

What is React Native?

• A framework for creating web applications

• A framework for creating iOS and Android apps using JavaScript

• A tool for database management

• A programming language for AI development

Answer explanation

React Native is a framework that allows developers to create mobile applications for iOS and Android using JavaScript, enabling cross-platform development with a single codebase.

What is the main advantage of using Expo with React Native?

• It provides a complete toolkit for easy configuration

• It is only for advanced developers

• It limits access to APIs

• It is used for backend development

Answer explanation

The main advantage of using Expo with React Native is that it provides a complete toolkit for easy configuration, streamlining the development process and allowing developers to focus on building their apps without extensive setup.

What are "hooks" in React?

• Functions that allow the use of state and lifecycle features in functional components

• A type of database query

• A method for styling components

• A way to compile JavaScript code

Answer explanation

In React, hooks are functions that enable the use of state and lifecycle features within functional components, allowing developers to manage component behavior without needing class components.

What does the "state" refer to in mobile programming?

• The static data of an application

• The dynamic data of an application

• The user interface design

• The network configuration

Answer explanation

In mobile programming, the "state" refers to the dynamic data of an application, which can change over time based on user interactions or other events. This is crucial for maintaining the app's functionality and user experience.

Why is proper management of the component lifecycle important?

• It ensures the application is always online

• It guarantees interface consistency and reactivity

• It allows for faster coding

• It simplifies database queries

Answer explanation

Proper management of the component lifecycle is crucial as it guarantees interface consistency and reactivity, ensuring that the application responds correctly to user interactions and state changes.

What is a common use of hooks outside of React?

• Database management

• Styling web pages

• Intercepting and executing logic at specific points

• Compiling code

Answer explanation

Hooks are commonly used in various programming contexts to intercept and execute logic at specific points in a program's execution flow, allowing for more modular and reusable code.

What is a benefit of using hooks in React?

• They make the code more complex

• They make the code less organized

• They make the code more reusable and less complex

• They are only used for styling

Answer explanation

Using hooks in React simplifies code by allowing state and lifecycle features in functional components, making it more reusable and less complex compared to class components.

What is a key feature of Expo?

• It is only for iOS development

• It offers rapid visualization with Expo Go

• It is a database management tool

• It is used for server-side scripting

Answer explanation

A key feature of Expo is its ability to offer rapid visualization with Expo Go, allowing developers to quickly preview their applications on mobile devices without extensive setup.

What does the lifecycle of a component refer to?

• The phases a component goes through during its existence

• The design of the user interface

• The speed of the application

• The database schema

Answer explanation

The lifecycle of a component refers to the phases a component goes through during its existence, including creation, updating, and destruction. This is crucial for understanding how components behave in an application.

What is a limitation of using Expo?

• It is not suitable for beginners

• It limits access to specific native APIs

• It is only for web development

• It requires advanced coding skills

Answer explanation

A key limitation of using Expo is that it restricts access to certain native APIs, which can hinder the development of apps that require specific native functionalities.