DataEngineer
data engineer
Data Engineer Interview Questions-Google
1/ What is the difference between HDFS and traditional file systems? 2/ Explain the concept of MapReduce and how it works. 3/ What is YARN in Hadoop, and ...
Data Engineer Interview Questions-CGI
1)Whats the use of Databricks in your project? 2)Where you’ve used PySpark? What’s the use of it? And which languages you’ve worked on? 3)What’s medallion Architecture? Explain with ...
Data Engineer Interview Questions-Capgemini
1. Describe your work experience.2. Provide a detailed explanation of a project, including the data sources, file formats, and methods for file reading.3. Discuss the transformation techniques you ...
Data Engineer Interview Questions-Infosys(2-5 Years)
✅ Core Data Engineering Concepts: 1️⃣ What are the key responsibilities of a Data Engineer? 2️⃣ OLTP vs OLAP – What’s the difference? 3️⃣ ETL vs ELT – ...
Data Engineer Interview Questions-TCS(2-5 Years)
1. What are the key responsibilities of a Data Engineer? 2. Explain the difference between OLTP and OLAP systems. 3. What are ETL and ELT? When would you ...
Data Engineer Interview Questions-Persistent Systems(3-5 Years)
Apache Spark & PySpark (4 Questions) 1. What is the difference between `cache()` and `persist()` in Spark? In which scenarios would you prefer one over the other?2. Explain ...
Data Engineer Interview Questions-EY(Ernst &Young)
1.Explain your project architecture?2. How much data u handled in day to day basis and what is the business case of your project?3.What Cloud u used in your ...
Data Engineer Interview Questions-TCS
Section 1: SQL Questions (Coding + Scenario-Based) # 📌 Basic Queries 1. How would you find the 2nd highest salary from an employee table without using TOP or ...
