nference Data Engineer Interview Questions and Answers

Machine coding round

Q1. TCP/IP related questions, what happens when you search a webpage?
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Q2. Past projects discussions
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Q1. Behavioural questions on how would you tackle a particular scenario
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Basic OOP questions for python programming language

Q1. What's abstraction
Ans. 
Abstraction is the concept of hiding complex implementation details and showing only the necessary information to the user.
• Abstraction allows users to focus on what an object does instead of how it does it

• It helps in reducing complexity and improving efficiency in software development

• Example: In object-oriented programming, abstract classes and interfaces are used to achieve abstraction
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Q2. What's the difference between SQL and NoSQL database
Ans. 
SQL databases are relational databases with structured data, while NoSQL databases are non-relational databases with flexible, unstructured data.
• SQL databases use structured query language for defining and manipulating data, while NoSQL databases use different query languages or APIs.

• SQL databases are table-based, with a predefined schema, while NoSQL databases are document, key-value, wide-column, or graph-based.

• SQL d...read more
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Q1. Reverse a linked list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, prev, and next

• Iterate through the linked list, updating pointers to reverse the direction

• Update the head of the linked list to the last node after reversing
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Q2. Implement binary search algorithm
Ans. 
Binary search algorithm efficiently finds the target value in a sorted array.
• Start by defining the low and high indices of the array.

• Calculate the mid index and compare the target value with the value at mid.

• If target is less than mid value, update high to mid-1; if greater, update low to mid+1.

• Repeat until target is found or low is greater than high.
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Q1. Brief Introduction and basic questions
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Q2. Future plans and how am i going to achieve them
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Create an API using Notepad to check if a string is a palindrome or not.

Q1. Solid principal
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Good communication skills

Understanding topics

Q1. Why you are good fit the job?
Ans. 
I have a strong background in data analysis, with experience in utilizing various tools and techniques to derive insights from data.
• Extensive experience in data analysis

• Proficient in using tools like SQL, Python, and Tableau

• Strong problem-solving skills

• Ability to communicate complex findings to non-technical stakeholders
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Q2. What is the salary expectation?
Ans. 
Salary expectations are based on experience, skills, location, and industry standards.
• Consider factors like your experience, skills, education, location, and the industry norms when determining your salary expectation.

• Research the average salary range for Data Analysts in your area and industry to have a realistic expectation.

• Be prepared to negotiate based on the job responsibilities and benefits offered by the employe
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Q1. Details of Kafka
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Q2. Concurrency questions
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Q1. DS Algo type questions, string manipulation etc was asked and explored with more detailed questions
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Q1. In depth android, kotlin discussions and high level mapping questions
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Q1. General managerial questions and working agreements type discussion
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Medium level question

Q1. Coding round related to Data structures
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Q1. Introduce Yourself
Ans. 
I am a data analyst with a background in statistics and experience in analyzing large datasets to drive business decisions.
• Graduated with a degree in Statistics

• Proficient in data analysis tools such as Python, R, and SQL

• Experience in creating visualizations to communicate insights

• Strong problem-solving skills
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Q2. Skills you have
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