Which of the following is NOT a typical concern when deploying a machine learning model to production?
- Model performance degradation
- Data privacy and security
- Scalability issues
- Data preprocessing
Data preprocessing (Option D) is a crucial concern when deploying machine learning models to production. It involves preparing and transforming data to ensure it's compatible with the model, which is a common concern during deployment.
Your organization wants to move away from traditional batch processing of data and is looking for a tool that can offer in-memory processing for faster analytics. Which Big Data framework would you recommend?
- Apache Storm
- Apache Hadoop
- Apache HBase
- Apache Spark
Apache Spark provides in-memory processing capabilities, allowing for faster analytics compared to traditional batch processing. It's an excellent choice when speed and real-time data processing are priorities.
How to use connect from React Redux?
- Use it as a HOC to connect a component to the Redux store
- Use it as a middleware for handling async actions
- Use it to create a new Redux store
- Use it to reset the Redux state
connect is a Higher Order Component (HOprovided by React Redux that allows you to connect a component to the Redux store. It provides the component with access to the store and allows the component to subscribe to changes in the store's state.
What is the difference between Real DOM and Virtual DOM?
- Real DOM is faster than Virtual DOM
- Virtual DOM is faster than Real DOM
- Real DOM is a physical representation of the web page, while Virtual DOM is a virtual representation
- Virtual DOM is a physical representation of the web page, while Real DOM is a virtual representation
The Real DOM is a physical representation of the web page, consisting of all the HTML elements, their attributes, and their relationships with each other. The Virtual DOM, on the other hand, is a lightweight JavaScript representation of the Real DOM. The Virtual DOM allows React to update the UI efficiently by minimizing the number of updates needed to the Real DOM.
What is the benefit of styles modules?
- Styles modules allow for dynamic styling with props
- Styles modules allow you to use CSS with React components
- Styles modules are required for server-side rendering
- Styles modules prevent CSS class naming collisions
Styles modules in React allow you to avoid CSS class naming collisions by generating unique class names at runtime. This helps prevent conflicts with other styles in the project, and allows you to use descriptive class names without worrying about naming conventions.
How do you memoize a component?
- Use the "React.memo" higher-order component
- Use the "React.useMemo" hook
- Use the "componentDidUpdate" lifecycle method
- Use the "shouldComponentUpdate" lifecycle method
To memoize a component in React, you can use the "React.memo" higher-order component. This will prevent the component from re-rendering if the props have not changed. You can also use the "shouldComponentUpdate" lifecycle method or the "React.useMemo" hook to achieve similar results.
How do you make sure that user remains authenticated on page refresh while using Context API State Management?
- Use cookies to store the authentication token
- Store the authentication token in local storage
- Use session storage to store the authentication token
- Use a server-side session to store the authentication token
When using the Context API for state management in a React application, it is important to ensure that the user remains authenticated even if the page is refreshed. One way to do this is to store the authentication token in local storage, which persists even after the page is refreshed. This allows the application to retrieve the authentication token from local storage and use it to authenticate the user without requiring them to log in again.
How to avoid using relative path imports in create-react-app?
- Use absolute path imports with a "jsconfig.json" file
- Use environment variables with a ".env" file
- Use npm modules with the "dependencies" field in package.json
- Use webpack aliases with a "webpack.config.js" file
In Create React App, you can avoid using relative path imports by using absolute path imports with a "jsconfig.json" file. This will allow you to import modules from any directory in your project using a relative path, such as "src/components/MyComponent".
Can you list down top websites or applications using React as front end framework?
- Airbnb, Dropbox, and Salesforce
- Facebook, Instagram, and Netflix
- Google, Amazon, and Microsoft
- Twitter, LinkedIn, and PayPal
React is widely used by many popular websites and applications, including Facebook, Instagram, and Netflix. Other companies that use React include Airbnb, Dropbox, and Salesforce.
Can I dispatch an action in reducer?
- Yes, it is a common practice
- No, it violates the principle of unidirectional data flow
No, it is not recommended to dispatch actions in a reducer function. This violates the principle of unidirectional data flow in Redux, in which actions flow in a single direction from the view to the reducer. Dispatching an action in a reducer can lead to unexpected behavior and make the application more difficult to reason about.