Premier Info Assists Trainee Interview Questions and Answers

Good. Try to solve many puzzles.

Q1. Good. Try to solve many puzzles.
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Apptitude was completely based on reasoning and critical thinking

Q1. All Apptitude questions related to critical thinking
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Q1. HR was asked for self introduction and reasoning question
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Q1. Sql is the most important , Focus on Joins ,Sub query and Sql basics
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Q2. Joining tables with different joins
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Joining tables with different joins in SQL
• Use INNER JOIN to return rows when there is at least one match in both tables

• Use LEFT JOIN to return all rows from the left table and the matched rows from the right table

• Use RIGHT JOIN to return all rows from the right table and the matched rows from the left table

• Use FULL JOIN to return rows when there is a match in one of the tables
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Q1. Can you describe your experience within the industry?
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Q2. What is workflow automation?
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Q1. What is bioinformatics
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Bioinformatics is the field of science that combines biology, computer science, and statistics to analyze and interpret biological data.
• Bioinformatics involves the development and application of computational tools and techniques to study biological information.

• It includes the analysis of DNA, RNA, and protein sequences, as well as the prediction of protein structures and functions.

• Bioinformatics plays a crucial role i...read more
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Q2. It is a computational tool
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Q1. Tell about your experience
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Q1. Self introduction
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Q1. SQL joins, window functions, scenario based questions on data cleaning, data processing
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Q2. What strategies can be employed for the optimization of ETL processes and Spark jobs?
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Optimize ETL processes and Spark jobs through efficient design, resource management, and performance tuning.
• Use partitioning to improve data processing speed. For example, partitioning large datasets by date can speed up queries.

• Implement data caching in Spark to store intermediate results, reducing the need for repeated computations.

• Optimize data formats by using columnar storage formats like Parquet or ORC, which imp...read more
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Q1. What is zero coupon bond?
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A zero coupon bond is a bond that pays no interest and is sold at a discount to its face value.
• Zero coupon bonds are also known as discount bonds.

• Investors buy these bonds at a price lower than their face value and receive the full face value at maturity.

• The difference between the purchase price and the face value is the investor's return.

• Zero coupon bonds are often used for long-term investments, such as retirement sa...read more
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Q2. What is corporate actions and how you record those in books?
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Corporate actions are events initiated by a company that can affect its stock price and shareholders. They are recorded in books through various accounting entries.
• Corporate actions include stock splits, dividends, mergers, acquisitions, and spin-offs.

• These actions are recorded in books through journal entries and adjustments to accounts such as retained earnings and stockholders' equity.

• For example, if a company decla...read more
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