BALAJI INFRA PROJECTS Senior Engineer Interview Questions and Answers

Q1. They had asked some questions of Solar sector...
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Q1. Discuss about Some personal questions as well as Location details
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Normal . Keep calm stay focused. Study hard work smart.
Great

Q1. Nicely done... friendly Tell me about yourself
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Q2. Where are you from ?
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First round was coding test on Coderbyte it was good.

Q1. This round is video technical interview on flowcareer platform
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Q2. Coding DSA question was asked on array.
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Q1. This round contains mix questions on theory as well as DSA.
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Q2. Machine coding question asked on react.js.
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Q1. Some basic react.js and node.js questions.
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Q2. Questions asked on MongoDB and one DSA question on array asked.
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Q1. This round is HR salary discussion round and i got offer.
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Q1. Basic questions on background
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Q2. Why do you want to join meta
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DSA Round - Graphs & Trees

Q1. System Design - delved a lot deeper
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Q1. Oops related questions
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Q2. C language quizzes
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Q1. Basics of kotlin, sealed class, viewmodel implementation,
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Q2. Caching mechanism
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Technical aspects about linked list,trees, stacks

Topic related to humanities

There was mcq test with 1 sql code based question.

Q1. It was technical interview of around 30 min, questions were direct and short on react lifecycle and basic concepts of js.
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Q2. What is debounce and throttling?
Ans. 
Debounce and throttling are techniques used in web development to limit the number of times a function is called.
• Debounce delays the execution of a function until after a specified time period has elapsed without additional calls.

• Throttling limits the rate at which a function is called, ensuring it is not called more than once within a specified time interval.

• Debounce is useful for handling events like resizing a windo...read more
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Q3. What is diff between git merge and rebase?
Ans. 
Git merge combines changes from different branches, while rebase moves the current branch to the tip of another branch.
• Merge creates a new commit with combined changes, while rebase rewrites commit history.

• Merge preserves the commit history of both branches, while rebase creates a linear history.

• Merge is non-destructive and suitable for public branches, while rebase is destructive and should be used for private branche...read more
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Q4. What is diff between git fork and clone?
Ans. 
Git fork creates a copy of a repository under your GitHub account, while git clone creates a local copy of a repository.
• Fork creates a copy on GitHub, clone creates a local copy on your machine

• Forking allows you to make changes without affecting the original repository

• Cloning downloads the entire repository to your local machine

• Forking is commonly used for contributing to open source projects
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Q5. What is DOM in react?
Ans. 
DOM in React stands for Document Object Model, representing the structure of a web page as a tree of objects.
• DOM in React is a virtual representation of the actual HTML elements on a web page.

• React uses a virtual DOM to improve performance by updating only the necessary components.

• Changes to the virtual DOM are compared with the real DOM, and only the differences are updated.

• This helps in minimizing the number of DOM m...read more
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Q1. It was based on round 2 but in detail.
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