PureSoftware Interview Questions, Process, and Tips

Q1. Questions on ADF, data factory and databricks
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Q2. Find longest palindrome string in a given string
Ans. 
Use dynamic programming to find the longest palindrome substring in a given string.
• Iterate through each character in the string and expand around it to find palindromes

• Store the length of each palindrome found and return the longest one

• Handle both odd and even length palindromes
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Q3. Spark, memory optimization, repartition and data skewness related question
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Q1. With client, asked project end to end details and my role into it
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Q1. PVS logon process for Citrix
Ans. 
PVS logon process involves streaming a vDisk to a target device for user logon.
• PVS streams a vDisk to target device over network during logon process

• User credentials are authenticated by Citrix Delivery Controller

• User profile is loaded from vDisk during logon

• Applications are launched from vDisk after logon
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Q1. Citrix logon process
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Q1. DNS resolving ,DHCP
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Data structures and algorithms, javascript and react questions

Q1. Questions on system design
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Q2. Questions on advanced CI/CD pipeline
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Q1. Discussion on product management
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Q2. State management system
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Q1. It was good they just follow the process asked some simple java question.
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Q2. What is the difference between hashmap and concurrenthashmap
Ans. 
HashMap is not thread-safe while ConcurrentHashMap is thread-safe.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if modified during iteration.

• ConcurrentHashMap allows concurrent read and write operations without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple threads to operate on different segments concurren
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Q3. SQL question of third highest salary
Ans. 
To find the third highest salary in a SQL table, use the 'SELECT DISTINCT' statement with 'ORDER BY' and 'LIMIT'.
• Use 'SELECT DISTINCT' to avoid duplicates

• Order the salaries in descending order using 'ORDER BY'

• Use 'LIMIT 2,1' to skip the first two highest salaries and retrieve the third highest salary
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Q1. Overall it was good
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Q2. System design related question design parking lot
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Q1. Asked me about the salary expectations
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