Unified Mentor Full Stack Developer Interview Questions and Answers

Basic coding like prime number,palindrome ,patterns

Q1. All academic questions in depth
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Q2. Operatingsystem
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Q3. Database completely like writethe queryif yougiven the requirements
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Q4. Data structures
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Q5. Web development
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Q1. What is idempotent in rest api
Ans. 
Idempotent in REST API means multiple identical requests have the same effect as a single request.
• Idempotent operations can be safely retried without causing unintended effects.

• GET, PUT, and DELETE methods are idempotent, while POST method is not.

• For example, sending the same DELETE request multiple times will have the same effect as sending it once.

• Idempotency is important for ensuring data consistency and preventing
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Q1. Write a program to frequency of character in string in java using stream.
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Program to find frequency of characters in a string using Java stream.
• Convert the string to a character array using toCharArray() method.

• Create a stream of characters using Arrays.stream() method.

• Use Collectors.groupingBy() method to group the characters by their frequency.

• Use Collectors.counting() method to count the frequency of each character.

• Store the result in a Map.

• Print the result using forEach(
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About of programing languages

Q1. About fullstack development
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Any real word project

Scenario based questions will be more to check you ability

Java related questions are more based on their requirements

Q1. Difference between processing in Node.js and Java
Ans. 
Node.js is event-driven and non-blocking while Java is thread-based and blocking.
• Node.js uses an event loop to handle multiple requests simultaneously while Java creates a new thread for each request.

• Node.js is faster for I/O-bound tasks while Java is better for CPU-bound tasks.

• Node.js is more lightweight and easier to scale while Java requires more resources.

• Node.js is better for real-time applications while Java is b...read more
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Question asked based on Hashing

Q1. HR related questions
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There were multiple choice question from react, javascript and node js

Q1. Javascript, react theory as well as practical questions were asked eg.
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Q2. 1. What is the flow of redux? 2. Write code for promises.
Ans. 
Flow of Redux and code for promises
• Redux flow involves dispatching actions, reducers updating state, and components subscribing to state changes

• Promises are used for asynchronous operations and have a resolve and reject function

• Example code for promises: new Promise((resolve, reject) => { // code here })
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