Clerisy Solutions Web Developer Interview Questions and Answers

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Q1. Expected salary, family, future plans
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Q1. Docker Basics:What is Docker, and how does it differ from traditional virtualization?Explain the purpose of Docker images and containers.Node.js Fundamentals:Describe the event-driven architecture of Node....read more
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Q1. Can you explain the difference between == and === in JavaScript?
Ans. 
In JavaScript, == checks for value equality, while === checks for both value and type equality.
• == (loose equality) converts types if they are different: 5 == '5' is true.

• === (strict equality) does not convert types: 5 === '5' is false.

• Use === to avoid unexpected type coercion and ensure both value and type match.

• Example: null == undefined is true, but null === undefined is false.
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Q2. What is the purpose of using React hooks like useState and useEffect?
Ans. 
React hooks like useState and useEffect manage state and side effects in functional components, enhancing code reusability and readability.
• useState allows functional components to manage local state. Example: const [count, setCount] = useState(0);

• useEffect handles side effects like data fetching or subscriptions. Example: useEffect(() => { fetchData(); }, []);

• Both hooks promote cleaner code by avoiding class compone...read more
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Q3. What are components in React?
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Components in React are reusable, self-contained pieces of UI that manage their own state and can be composed to build complex interfaces.
• Components can be functional or class-based. Example: `function MyComponent() { return <div>Hello</div>; }`

• They can accept props to customize their behavior. Example: `<MyComponent name='John' />`.

• Components can manage their own state using the `useState` hook in fu...read more
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Q4.  Difference between functional and class components?
Ans. 
Functional components are simpler and stateless, while class components are more complex and can manage state and lifecycle methods.
• Functional components are defined as JavaScript functions, e.g., `const MyComponent = () => { return <div>Hello</div>; }`.

• Class components are ES6 classes that extend `React.Component`, e.g., `class MyComponent extends React.Component { render() { return <div>Hello<...read more
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Q5. What are props and how are they different from state?
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Props are inputs to components, while state is managed within components. They serve different purposes in React.
• Props are read-only and passed from parent to child components.

• State is mutable and managed within the component itself.

• Example of props: <ChildComponent name='John' />

• Example of state: this.setState({ count: this.state.count + 1 })

• Props are used for configuration, while state is used for dynamic data.
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Q6.  What is the virtual DOM?
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The virtual DOM is a lightweight representation of the actual DOM, enabling efficient updates and rendering in web applications.
• The virtual DOM is a concept used in libraries like React to optimize rendering performance.

• It allows developers to make changes to the UI without directly manipulating the actual DOM, which can be slow.

• When a change occurs, a new virtual DOM is created, and a diffing algorithm determines the ...read more
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Q1. What motivates you to seek employment at Zidio Technology?
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Q2. What is your understanding of our company and its products?
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Q1. What observations do you have about the company?
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Q2. How do you address issues that arise during the development process?
Ans. 
I address development issues through proactive communication, systematic debugging, and iterative testing to ensure quality outcomes.
• Identify the issue: Use debugging tools to pinpoint errors in code, such as console logs or breakpoints.

• Collaborate with the team: Discuss challenges in team meetings to gather diverse perspectives and solutions.

• Prioritize issues: Tackle critical bugs first, like a broken feature affectin...read more
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Q1. Can you provide an introduction based on your resume?
Ans. 
Passionate web developer with expertise in front-end technologies and a strong foundation in user experience design.
• Proficient in HTML, CSS, and JavaScript, with experience in frameworks like React and Angular.

• Developed responsive websites that improved user engagement by 30%.

• Collaborated with cross-functional teams to deliver projects on time and within budget.

• Strong understanding of web accessibility standards and be...read more
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Q2. Is there a job opportunity available after the internship?
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I have given the coding test in python language. Out of 5 questions, we have to attain a minimum of 3 questions.

Q1. The questions in technical round is related to the task which were given to us and also they ask basics questions related to technical.
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Q1. The interview was about the personality check, overeally it was good .
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Q1. Basic concepts of Promises
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Q2. What is Hashing
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Q3. Authentication and Validation
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