Persistent Systems Software Engineer Interview Questions, Process, and Tips

Basics on Arrays , strings

Q1. Programming questions
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Q2. Pattern printing ,reverse of strings
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Q1. What are your strengths
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Question from hackerearth practice questions. Medium difficulty.

Design a elevator system using pseudo code.

Q1. Basics on oops, one basic quiz, questions on college project.
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Basic questions of core CS subjects like OS, CN, DS, OOP, Computer Organization, Programming concepts.

Q1. 1. Pattern Printing Program
Ans. 
A program to print patterns using arrays of strings.
• Create an array of strings to hold the pattern

• Use loops to fill the array with the desired pattern

• Print the array to display the pattern
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Q2. 2. Reverse the given array and store it in the same variable (Do not use temporary array for reverse operation).
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Q3. 3. Write a query to demonstrate outer join on given tables.
Ans. 
Demonstrate outer join using SQL query
• Use LEFT OUTER JOIN or RIGHT OUTER JOIN to include all records from one table and matching records from another table

• Use the ON keyword to specify the join condition

• Use COALESCE function to handle NULL values in the result set
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Q1. Why should we hire you?
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Q2. What is your family background?
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Q3. Where do you see yourself in 5 years?
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Q4. What are your strengths and weaknesses?
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Q5. Tell me about yourself.
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It was aptitude test Along with coding questions. The level was easy. PPL got selected for interview even if majority of apti questions were right and none of coding were right.

Interview round with basic sql questions and told to write switch statement code

Q1. Where do you see yourself in next 5 years?
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