Hexaware Technologies Front end Developer Interview Questions and Answers

2 question 1 easy 2 medium dsa

2 codes of dsa and mcq.

Q1. Code paring round
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Q2. Dsa question of graph
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why should we hire you?
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Q5. Why are you looking for a change?
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Q6. Where do you see yourself in 5 years?
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Q7. What are your strengths and weaknesses?
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Q8. Tell me about yourself.
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Q9. Tell me about your questions
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Find reverse string using array

Q1. What are Routing Guards?
Ans. 
Routing guards are used in Angular to control access to certain routes based on certain conditions.
• Routing guards are used to protect routes in Angular applications.

• They can be used to control access based on authentication status, user roles, etc.

• There are different types of routing guards like CanActivate, CanActivateChild, CanDeactivate, CanLoad.

• Example: CanActivate guard can be used to check if a user is authentica
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Q1. Difference between foreach and map
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foreach is used to iterate over an array without returning a new array, while map creates a new array by applying a function to each element.
• foreach does not return a new array, while map does

• foreach does not modify the original array, while map creates a new array

• foreach is used for iterating over elements, while map is used for transforming elements

• Example: foreach - array.forEach(item => console.log(item)), map - ar
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Q2. Explain rxjs operators
Ans. 
RxJS operators are functions that enable complex asynchronous operations and data manipulation in reactive programming.
• RxJS operators are used to transform, filter, combine, and create observables.

• Operators can be categorized into creation operators, transformation operators, filtering operators, combination operators, and utility operators.

• Examples of operators include map, filter, mergeMap, switchMap, debounceTime, a
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Q1. What is Event Loop ? How it works?
Ans. 
Event Loop is a mechanism in JavaScript that manages the execution of code and handles asynchronous operations.
• Event Loop continuously checks the call stack and the message queue.

• If the call stack is empty, it takes the first message from the queue and pushes it onto the call stack.

• If the message is a callback function, it is executed and removed from the call stack.

• If the message is not a callback function, it is pass...read more
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Q2. Make a set of 6 boxes Responsive in CSS
Ans. 
Use CSS to make a set of 6 boxes responsive
• Use percentage or viewport units for width and height

• Use media queries to adjust styles for different screen sizes

• Consider using flexbox or grid for layout

• Avoid using fixed pixel values

• Test on different devices and browsers

• Use CSS frameworks like Bootstrap or Foundation for easier implementation
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Q3. Hoisting & Closures Questions
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Q1. What's your Salary expectations ?
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How revere the string without using reverse method

Split duplication from the array

Q1. Salary negotiation, asked about my previous employer
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Q2. Speak bold at time of salary negotiation
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Q1. Basic questions on JavaScript, React and HTML/CSS.
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Q2. Hoisting, Closures, Event Loop, Promises, Async/Await
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Q3. Semantic elements, block and inline elements, meta tag CSS box model, ways of adding CSS, CSS pre-processors
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Q4. React questions on component lifecycle, different hooks and thier use, fetching data and displaying it in a list.
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