PowerSchool India Interview Questions and Answers

Q1. Hash map internal working
Ans. 
Hash map is a data structure that stores key-value pairs and uses hashing to quickly retrieve values.
• Hash map uses a hash function to map keys to indices in an array.

• Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

• Hash map operations like insertion, deletion, and lookup have an average time complexity of O(1).
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Q2. Find nth salary in sql
Ans. 
SQL query to find nth salary
• Use ORDER BY and LIMIT clauses

• Exclude duplicates using DISTINCT

• Use subquery to find nth salary
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Q1. This round was with Senior Director. It’s just like conversation round.
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This round was an assessment. There it has questions from javascript, jquery, java, html, css, database.

Q1. Your salary expectations and all.
Ans. 
I expect a competitive salary based on my experience and skills.
• I have X years of experience in software engineering.

• I have expertise in programming languages such as Java, Python, and C++.

• I have worked on projects involving database management and web development.

• I have a strong understanding of algorithms and data structures.

• I have a track record of delivering high-quality software solutions on time.

• I continuously up...read more
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Q1. What is troubleshooting
Ans. 
Troubleshooting is the process of identifying, diagnosing, and resolving technical issues or problems.
• Identifying the issue or problem

• Gathering information and data related to the issue

• Analyzing the information to determine the root cause

• Developing and implementing a solution

• Testing the solution to ensure it resolves the issue

• Documenting the troubleshooting process and solution
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Q2. Differ between mysql and sql
Ans. 
MySQL is a specific relational database management system, while SQL is a language used to interact with databases.
• MySQL is a specific RDBMS, while SQL is a language used to interact with databases

• SQL is a standard language for querying and managing databases, while MySQL is a specific implementation of that language

• MySQL is open-source and widely used, while SQL is a language used by many different database systems
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Q3. Why you choose this role
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Q1. 3 rounds of technicaL languages coding interview based on your resume
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Q2. Aptitude and reasoning and R
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Q1. General OOP and DSA questions
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Q1. Past projects and details
Ans. 
Developed a web application for a retail company to manage inventory and sales.
• Used Java and Spring framework for backend development

• Implemented a responsive user interface using HTML, CSS, and JavaScript

• Integrated with a third-party payment gateway for online transactions
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Q1. Salary discussion, etc
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Q1. Nothing much, tell about your self
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Q2. And process of previous company
Ans. 
In my previous company, we followed a structured product development process to ensure quality and efficiency.
• Conducted market research to identify customer needs and trends.

• Collaborated with cross-functional teams, including engineering and marketing, to align product goals.

• Utilized Agile methodologies for iterative development and quick feedback loops.

• Implemented user testing sessions to gather insights and improve p...read more
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Logical reasoning was asked

Q1. Performance tuning
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Q1. Salary expectations
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