Persistent Systems Interview Questions, Process, and Tips

Q1. Java Coding questions
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Q1. Java coding questions related to Array and strings
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Q1. Find the longest substring without repeating characters
Ans. 
Find the longest substring without repeating characters in a given string.
• Use a sliding window approach to iterate through the string and keep track of the characters seen so far.

• Update the start index of the window when a repeating character is encountered.

• Keep track of the longest substring length and characters seen in a hashmap.
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Q2. Given a time array, check if the user can attend all meeting. Array had pairs - start time and end time
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Medium algos
Micro services questions
Java questions

Q1. What is difference between List and Tuple in python?
Ans. 
List is mutable, Tuple is immutable in Python.
• List can be modified after creation, Tuple cannot be modified.

• List uses square brackets [], Tuple uses parentheses ().

• List is used for collections of items that may need to be changed, Tuple is used for collections of items that should not change.

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)
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Q2. Get min and max from a list without using function
Ans. 
Find min and max from a list without using function
• Iterate through the list and compare each element with current min and max values

• Update min and max values accordingly
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Q3. Explain iterator, generator and lambdas
Ans. 
Iterators are objects that allow iteration over a sequence, generators are functions that yield values one at a time, and lambdas are anonymous functions.
• Iterators are objects that implement the iterator protocol, with methods like __iter__() and __next__().

• Generators are functions that use the yield keyword to return values one at a time, pausing execution between each yield.

• Lambdas are anonymous functions defined usi...read more
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Q1. How to enable data factory
Ans. 
To enable data factory, you need to create a data factory resource in Azure and configure it with linked services, datasets, and pipelines.
• Create a data factory resource in Azure portal

• Configure linked services to connect to data sources and destinations

• Define datasets to represent the data you want to process

• Create pipelines to orchestrate the movement and transformation of data

• Monitor and manage the data factory usin
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Q2. How to disable data factory
Ans. 
To disable data factory, you can stop or delete the data factory resources.
• Stop or delete the data factory pipelines and triggers

• Deallocate or delete the data factory linked services

• Disable or delete the data factory datasets and data flows
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Q1. Salary discussand discussion
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Q2. How much your expecting
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It was Aptitude+Coding test for the fundamentals of Computers related topics such as CN,OS,SDLC,OOPS,DBMS,etc

Q1. It is technical1 and basically it was depends on your working technology such as python(MY ONE),OOPS concepts ,SQL as well as basic coding in data structures like Linked list,Searching techniques and too m...read more
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Q1. It is technical2 and precisely on Some HR as well as project oriented questions to check our programming skills application in real-life.
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Q1. Tell me about yourself? Tell me your hobbies? Why we choose you? Why persistent?
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