Zidio Development Intern Interview Questions and Answers

Java is a programming language used for building applications, while JavaScript is a scripting language primarily for web development.

• Java is a statically typed, compiled language; JavaScript is a dynamically typed, interpreted language.

• Java is used for server-side applications (e.g., Spring framework); JavaScript is used for client-side scripting (e.g., React, Angular).

• Java code is written in .java files and comp...read more

My passion for creativity and technology drives my interest in Zideo development, where I can create engaging digital experiences.

• I have always been fascinated by storytelling, and Zideo development allows me to combine narrative with visual elements.

• During my college project, I created a short animated video that received positive feedback, sparking my interest in this field.

• The rapid evolution of technology exci...read more

Managing routes in a MERN stack involves defining API endpoints and client-side routes for seamless navigation and data handling.

• Use Express.js for backend routing: Define routes in a separate file, e.g., 'routes/user.js'.

• Implement RESTful API conventions: Use GET, POST, PUT, DELETE methods for CRUD operations.

• Utilize React Router for client-side routing: Set up routes in 'App.js' using <BrowserRouter> and &...read more

Developed a task management application using the MERN stack to streamline team collaboration and project tracking.

• Utilized MongoDB for database management, storing user tasks and project details.

• Implemented Express.js to create RESTful APIs for task CRUD operations.

• Used React.js for building a responsive user interface, allowing users to add, edit, and delete tasks seamlessly.

• Incorporated Node.js for server-side ...read more

MSE, or Mean Squared Error, is a common metric used to measure the average squared difference between predicted and actual values.

• MSE is calculated as the average of the squares of the errors: MSE = (1/n) * Σ(actual - predicted)².

• A lower MSE indicates a better fit of the model to the data.

• For example, if actual values are [3, -0.5, 2] and predicted values are [2.5, 0.0, 2], MSE = (1/3) * ((3-2.5)² + (-0.5-0)² + (2...read more

Supervised learning is a machine learning approach where a model is trained on labeled data to make predictions or classifications.

• Involves training a model on a dataset with input-output pairs.

• Common algorithms include linear regression, decision trees, and support vector machines.

• Used for tasks like spam detection (classifying emails) and image recognition (identifying objects in images).

• The model learns from th...read more

React hooks are functions that let you use state and lifecycle features in functional components.

• useState: Allows you to add state to functional components. Example: const [count, setCount] = useState(0);

• useEffect: Lets you perform side effects in function components. Example: useEffect(() => { document.title = `Count: ${count}`; }, [count]);

• useContext: Provides a way to pass data through the component tree wit...read more

JavaScript is a versatile, high-level programming language primarily used for web development, enabling interactive and dynamic content.

• JavaScript is an event-driven language, allowing developers to create responsive user interfaces. Example: Handling button clicks.

• It supports object-oriented programming, enabling code reuse and modularity. Example: Creating classes and objects.

• JavaScript can manipulate the DOM, a...read more