Dk Associates Data Engineer Interview Questions and Answers

Q1. Basic questions on our previous work experince
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Q2. What are the charters you have worked on
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Q1. Some technical questions on excel and sql
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Basic aptitude test very easy

Topic was pros and cons of social media
total time was 10, 2 minutes for each candidate.

Give the string and array related questions

Basic computer knowledge, English grammar

Q1. Tell me about yourself Common question
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Q2. Tell me about yourself
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Q3. Common topic we say about that topic
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Q4. Testing english knowledge
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Q1. Just observe how we work
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Q1. What is bias variance tradeoff in machine learning
Ans. 
Bias-variance tradeoff is the balance between underfitting and overfitting in machine learning models.
• Bias refers to error from erroneous assumptions in the learning algorithm, leading to underfitting.

• Variance refers to error from sensitivity to small fluctuations in the training set, leading to overfitting.

• The tradeoff involves finding the right level of model complexity to minimize both bias and variance.

• Regularizati...read more
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Q2. Explain your project
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Q3. Write a SQL code to find 2nd highest salary
Ans. 
SQL code to find 2nd highest salary
• Use the MAX() function to find the highest salary

• Use the WHERE clause to exclude the highest salary

• Order the salaries in descending order and limit the result to 1
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Typing data off mobile

Coding AB C any code

Q1. Can you describe a challenging problem you've faced during a project and how you solved it?
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Q2. Tell me about your projects mentioned in the resume.
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Q3. Tell me about yourself
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Q4. Why are you interested in this -- position?
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Q5. What do you know about our company?
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Online Assessment - 1 Hrs

First round was based on logical questions and was taken on hacker earth

Q1. First question was based on rotating a matrix by 90 degrees
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