Allerin Tech Full Stack Developer Interview Questions and Answers

Q1. What is software
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Q2. What is hardware
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Q3. What are the Various Categories of Software?
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Q4. What are different SDLC Models Available?
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Q5. What is the Waterfall Method and What are its Use Cases?
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Q1. Don't remember so I have no
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Q2. I can't remember it
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Q1. I don't know the res
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Q2. I can't remember it
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Q1. Java oops concepts
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Q1. Self intro for yourself
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Questions on dsa, coding question, overall good experience and so on

Q1. Binary search and sorting
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Q2. Prime number coding question
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Asked related to python

Q1. Tell me about yourself
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Q2. Explain the project in resume
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Q1. Difference between string and string builder.
Ans. 
String is immutable, while StringBuilder is mutable and more efficient for concatenating strings.
• String is immutable, meaning once created, its value cannot be changed. StringBuilder is mutable, allowing for modifications without creating new objects.

• String concatenation creates a new string object each time, while StringBuilder modifies the existing object directly.

• StringBuilder is more efficient for concatenating mul...read more
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Q2. What is async and await
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Async and await are keywords in JavaScript used to work with asynchronous code.
• Async is used to define a function as asynchronous, allowing it to run in the background without blocking the main thread.

• Await is used to pause the execution of an async function until a Promise is settled, and then resumes the function with the resolved value.

• Async/await is a more readable and cleaner way to write asynchronous code compare...read more
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It was a test that had like basic c questions that one needs to practice, basic logical reasoning and Mathematics, a couple of English grammar questions

There is a coding round with 4 questions 3 coding questions and one find the output of the c program question, one easy question, 2 medium questions one medium to hard level.Two linear data structure questions one array one linked list and one tree question.

Another coding test with 3 questions medium to hard level questions from trees and linked lists, with optimisation required