HOM India Private Limited Interview Questions and Answers

Topological Sort based question and it's follow up

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Q1. What are the distribution and sort keys in Amazon Redshift, and how do they impact data organization and query performance?
Ans. 
Distribution and sort keys in Amazon Redshift impact data organization and query performance.
• Distribution key determines how data is distributed across nodes for parallel processing

• Sort key determines how data is physically stored on disk to optimize query performance

• Choosing appropriate distribution and sort keys can significantly improve query performance

• Example: Distributing data based on a column with high cardinal
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Q2. Questions with choosing different set of distribution keys for different cases
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Q1. Behavioral questions
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They ask you about basic oop questions

It was a panel interview

Easy mcq from oops and aptitude

Q1. All oops concept, linked list code, pattern questions
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Q1. All oops concept, doubly linked list code, pattern code
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Aptitude consited of maths and coding quetions

Q1. Basic C++ question and concepts were asked
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Q2. Problems were given and asked how i can resolve them efficiently
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Easy level coding test, with basic knowledge of programming

Recursion, and other advance topics

Q1. Basic HR question, about your background, experience projects etc
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Q2. What projects you work on
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There were questions of basic aptitude

Q1. Introduce yourself
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Q2. About my projects
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Q3. What is Radix sort
Ans. 
Radix sort is a non-comparative sorting algorithm that sorts integers by processing individual digits.
• Radix sort works by sorting numbers based on each digit's value, starting from the least significant digit to the most significant digit.

• It can be implemented using counting sort or bucket sort as a subroutine.

• Radix sort is efficient for sorting integers with a fixed number of digits, like phone numbers or social secur
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1. Question regarding Strings and maths .

Q1. Design twitter.
Ans. 
Design a social media platform for microblogging and sharing short messages.
• User profiles with bio, profile picture, and followers/following counts

• Ability to post tweets with text, images, and videos

• Timeline to view tweets from followed users

• Hashtags and mentions for organizing and interacting with content

• Like, retweet, and reply functionalities for engagement
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