EXL Service AWS Data Engineer Interview Questions and Answers

Q1. Self introduction
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Q2. Excel questions
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I was asked to write SQL queries for 3rd highest salary of the employee, some name filtering, group by tasks.
Python code to find the index of the maximum number without using numpy.

Q1. Explain the Project undertaken during the research and follow-up questions
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Q1. Write pandas query to separate the names as first and last name from the full name. Drop the duplicate columns and also the missing values. Write output for the Python code. Write SQL query to retrieve t...read more
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Answering questions related to data science concepts and techniques.
• Recall is the ratio of correctly predicted positive observations to the total actual positives. Precision is the ratio of correctly predicted positive observations to the total predicted positives.

• To reduce variance in an ensemble model, techniques like bagging, boosting, and stacking can be used. Bagging involves training multiple models on different ...read more
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Q1. Sum and sumif, date functions, text join, pivot tables
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DSA and ML, AI, Coding question

Q1. Case study which was easy
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Q1. In depth questions on ML
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1 hr exam it is easy to crack

Q1. Capital budgeting & cash flow statement
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Q1. Fundamentals, financial statements
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Q2. Project details, intrests
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Q1. Introduction . project
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Q2. General information , Finance knowledge
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Analysing the company's document and finding out the answer which will be given in choose

Q1. Details of ESG(Environmental, social and governance)
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ESG stands for Environmental, Social and Governance. It is a set of criteria used to evaluate a company's performance in these areas.
• Environmental criteria include a company's impact on the environment, such as its carbon footprint and use of renewable energy.

• Social criteria include a company's relationships with its employees, customers, and communities, as well as its impact on human rights.

• Governance criteria includ...read more
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Q2. What is mean by renewable and non renewable energy
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Renewable energy is derived from natural resources that can be replenished, while non-renewable energy is finite and cannot be replenished.
• Renewable energy sources include solar, wind, hydro, geothermal, and biomass

• Non-renewable energy sources include fossil fuels like coal, oil, and natural gas

• Renewable energy is considered more sustainable and environmentally friendly

• Non-renewable energy sources are finite and will e...read more
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Q1. Technical basic questions
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Q2. Communication skills
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