Dun & Bradstreet Data Engineer Interview Questions and Answers

Q1. 3rd largest salary from each department(window function)
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Share the link for codesignal

Q1. Java related questions
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Q2. Based on the resume
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Q1. Current time and their angles
Ans. 
The question is asking for the current time and the angles formed by the hour and minute hands on a clock.
• The angle between the hour and minute hands of a clock can be calculated using the formula: angle = |(30*hour - (11/2)*minutes)|

• At 3:00, the angle between the hour and minute hands is 90 degrees.

• At 6:00, the angle between the hour and minute hands is 180 degrees.

• At 9:00, the angle between the hour and minute hands
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Q1. Didnt qual here btw
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Q1. Didnt qual either btw
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Q1. Angular and JavaScript.
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Q1. Behavioral Questions
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Q2. CI-CD, Jenkins, AWS
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Q1. Client Interview - Security related.
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There was a coding round and out of 75 students 28 got selected for next round

Q1. Total on resume and basic coding questions like write code for different sorting algorithms.
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Q2. Explain your project in detail and asking cross questions regarding project.
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Q1. I was rejected in round 2.
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Q1. Questions related to Java, Spring, Rest API
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Q1. Basic java collection questions
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Q1. Spring boot basic questions
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Q1. Why should we hire you
Ans. 
I have a strong technical background, proven track record of delivering high-quality software, and a passion for continuous learning and improvement.
• I have a Bachelor's degree in Computer Science and X years of experience in software development.

• I have successfully led multiple projects from conception to completion, delivering high-quality software on time and within budget.

• I am proficient in a variety of programming ...read more
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2 coding qns and aptitude

Q1. Question from resume, projects, SQL, OOPS
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Q2. Lambda function in python
Ans. 
Lambda function in Python is an anonymous function that can have any number of arguments, but can only have one expression.
• Lambda functions are defined using the lambda keyword.

• They are commonly used for small, one-time tasks.

• They can take any number of arguments, but can only have one expression.

• Example: lambda x: x*2 will return the double of x.
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Q1. Why do you want to work for this company
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