Nexval Infotech Processor Interview Questions and Answers

Prepare well on Python, SQL and be good at solving analytical problems

Q1. Mostly based on your resume, prepare to answer whatever you kept on resume. Still prepare well on Python, SQL... Go through AWS/Datawarehouse concepts if role is Data Engineering position
Add your answer

Q1. Lightly on Technical side, Mostly on testing how you're able to solve business problems
Add your answer

They asked few questions related to SQL.

Q1. They'll ask questions related to whatever you have given in your resume.
Add your answer

Q1. They ask general questions about yourself.
Add your answer

4 SQL questions, complexity 7/10

Q1. Previous projects
Add your answer
Q2. In and around ML models
Add your answer

Q1. Usual, simple behavioural
Add your answer
Q2. Expected package
Add your answer

Topics will be mainly SQL and few python questions. Duration-3min to 1hr

Q1. What is CLT theorem and what are its uses
Ans. 
CLT theorem states that the distribution of sample means approaches a normal distribution as sample size increases.
• Central Limit Theorem (CLT) is a fundamental concept in statistics that states that the distribution of sample means approaches a normal distribution as the sample size increases.

• It is used in hypothesis testing, confidence intervals, and in estimating population parameters.

• CLT is essential in making infer...read more
Answered by AI
Add your answer
Q2. Asked to write SQL queries which uses join and window functions
Add your answer
Q3. Explain ML Data preparation and EDA steps in detail. What are major steps in preprocessing
Ans. 
ML data preparation involves cleaning, transforming, and organizing data for analysis. EDA involves exploring and visualizing data to understand its characteristics.
• Data cleaning: removing missing values, handling outliers, and dealing with duplicates

• Data transformation: encoding categorical variables, scaling numerical features, and creating new features

• Data organization: splitting data into training and testing sets,...read more
Answered by AI
Add your answer

Q1. Mainly interviewer checked how sound I was in different concepts like statistics, ML
Add your answer
Q2. Asked simple DL questions
Add your answer
Q3. Guestimates- like how much milk is consumed in your city on average. Give an estimate and show your structured way of arriving at that value
Add your answer

Q1. Why you want to join our comany?
Add your answer
Q2. What made you leave your previous organization
Add your answer
Q3. Salary negotations
Add your answer

Q1. SQL based questions
Add your answer
Q2. Logic based questions
Add your answer

Q1. Situation based questions
Add your answer
Q2. Questions related to company
Add your answer

Worst experience company is not so good

Q1. What is object oriented programming
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Examples of OOP languages include Java, C++, and Python
Answered by AI
Add your answer
Q2. Questions on data structute
Add your answer