PeopleStrong Technologies Implementation Engineer Interview Questions and Answers

Q1. Diffrence between list and tuple
Ans. 
Lists are mutable and can change, while tuples are immutable and cannot be altered after creation.
• Mutability: Lists can be modified (e.g., list.append(5)), while tuples cannot (e.g., tuple[0] = 5 raises an error).

• Syntax: Lists use square brackets (e.g., myList = [1, 2, 3]), while tuples use parentheses (e.g., myTuple = (1, 2, 3)).

• Performance: Tuples are generally faster than lists due to their immutability, making them...read more
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Q2. Diffrence between array and list
Ans. 
Arrays are fixed-size, while lists are dynamic and can grow or shrink in size.
• Arrays have a fixed size, e.g., `String[] colors = new String[5];`.

• Lists are dynamic, e.g., `List<String> colors = new ArrayList<>();`.

• Arrays store elements of the same type, while lists can store objects of different types.

• Accessing elements in arrays is faster due to contiguous memory allocation.

• Lists provide more built-in metho...read more
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Find the maximum and minimum number

Q1. Array questiona
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Q2. Strings based questions
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Q1. Solid principals
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Q2. Difference between pure and impure pipes
Ans. 
Pure pipes do not have any side effects and always return the same output for the same input, while impure pipes can have side effects and may not return the same output for the same input.
• Pure pipes are stateless and deterministic.

• Impure pipes can have side effects like modifying global variables or making network requests.

• Examples of pure pipes include filters in Angular, while examples of impure pipes include async
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Q1. IOS & Mac OS
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Q1. Design Patterns & System designs
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Algorithms & Data Structures

Q1. Pattern printing
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Q2. Previous project
Ans. 
Developed a web application for tracking inventory and sales data
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database storage
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Q1. Acid properties
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ACID properties are a set of properties that guarantee reliable database transactions.
• Atomicity: All operations in a transaction are completed successfully or none at all.

• Consistency: Database remains in a consistent state before and after the transaction.

• Isolation: Transactions are isolated from each other until they are completed.

• Durability: Once a transaction is committed, changes are permanent and cannot be lost.

• Ex...read more
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Q2. How to connect to db
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To connect to a database, you need to use a database connection string with the appropriate credentials.
• Use a database connection string with the necessary information such as server address, database name, username, and password.

• Choose the appropriate database driver for the type of database you are connecting to (e.g. MySQL, PostgreSQL, MongoDB).

• Establish a connection using a programming language-specific database li...read more
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Q1. Expected salary
Ans. 
My expected salary is based on my experience, skills, and the market rate for Software Engineers.
• Consider my years of experience in software development

• Research the average salary for Software Engineers in this location

• Factor in any additional skills or certifications I may have

• Be open to negotiation based on the overall compensation package
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Q2. Preferred location
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I am open to opportunities in various locations, with a preference for cities with a strong tech industry.
• Open to various locations

• Preference for cities with strong tech industry
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Q1. Purely scenario based questions
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Q2. Answer based on your experience
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Q1. 1. Depth about JVM internals 2. SQL Query questions
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Q1. Basic palindrome and string questions
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Q1. Oops, problem solving, puzzles
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