Janta Book Depot Interview Questions and Answers

Machine learning is a branch of AI that enables computers to learn and make predictions without explicit programming.

• Machine learning is a subset of artificial intelligence (AI) that focuses on developing algorithms and models that allow computers to learn from and make predictions or decisions based on data.

• It involves training a model on a large dataset and using it to make predictions or decisions on new, unseen data.

• Cloud computing is important for machine learning as it ...read more

Honeywell is a global technology company that specializes in aerospace, building technologies, and performance materials.

• Honeywell has a diverse portfolio of products and services

• Honeywell invests heavily in research and development

• Honeywell has a strong focus on sustainability and corporate responsibility

• Honeywell has a global presence with operations in over 70 countries

• Honeywell has a strong commitment to customer satisfaction

To fetch data from an API, you need to send a request to the API endpoint and process the response.

• Send a request to the API endpoint using HTTP methods like GET, POST, PUT, DELETE.

• Include any required parameters or headers in the request.

• Receive the response from the API, which usually comes in JSON or XML format.

• Parse the response data to extract the information you need.

• Handle any errors or exceptions that may occur during the process.

React hooks lifecycle includes initialization, rendering, updates, and cleanup.

• Hooks are called in the order they are defined in the component function.

• useState and useEffect are commonly used hooks in React.

• Hooks like useEffect can be used for data fetching, subscriptions, or manually changing the DOM.

• The cleanup function in useEffect can be used to clean up any resources or subscriptions.

• Hooks allow for more flexible and reusable code compared to class components.

A linked list is a linear data structure where each element is a separate object with a pointer to the next element.

• Consists of nodes that contain data and a pointer to the next node

• Can be singly or doubly linked

• Allows for efficient insertion and deletion of elements

Design patterns are reusable solutions to common problems in software design.

• Creational patterns: Singleton, Factory, Builder

• Structural patterns: Adapter, Decorator, Facade

• Behavioral patterns: Observer, Strategy, Template Method

useEffect is used for side effects in functional components, while useReducer is used for managing state in complex components.

• useEffect is used for handling side effects in functional components

• useReducer is used for managing state in complex components

• useEffect is similar to componentDidMount and componentDidUpdate in class components

• useReducer is similar to useState but for more complex state management

• useEffect can be used to fetch data from an API and update the componen...read more

Polymorphism is the ability of an object to take on many forms.

• Polymorphism allows objects of different classes to be treated as if they are of the same class.

• It can be achieved through method overloading or method overriding.

• Example: A shape class can have different subclasses like circle, square, and triangle, but they can all be treated as shapes.

• Polymorphism helps in achieving code reusability and flexibility.