Honeywell Technology Solutions Software Developer Interview Questions and Answers

Q1. What is the lifecycle of React hooks?
Ans. 
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...read more
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Q2. What is the process to fetch data from an API?
Ans. 
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...read more
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Q3. Hooks and custom hooks
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Q4. Difference between useeffect and usereducer
Ans. 
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...read more
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Q5. Html5 and css3 questions
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Minimum basic aptitude like profit,loss , encoding were asked

Q1. About ohms law equation
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Q2. About xor truth table
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Q1. Tell me about yourself
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Q2. Explain your project
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Q1. Explain different kinds of Design patterns
Ans. 
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
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Q2. Explain main pillars of OOPS
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The main pillars of OOPS are Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation restricts access to certain components within a class, protecting data from outside interference.

• Polymorphism allows objects to be treated as instances of their parent class, enabling flexibility in code.

• Abstraction hides complex implementa...read more
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