PayPal Software Engineer Intern Trainee Interview Questions and Answers

Java coding questions, basic Java questions.

Q1. Java basics questions.
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Q2. Live coding.
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Q1. Discussion on previous experience and projects.
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Q2. System design question
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Q1. Questions on SQL, Java advanced, personal projects, Java frameworks, UI based questions, Agile methodologies.
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Q2. Interview discussion with the whole team.
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Q1. Benefits discussion.
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Q2. Salary discussion.
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Basic Oops MCQ and aptitude and one da

Q1. Basic dsa and project
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Q1. DSA and project related
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Q1. Explain Concurrency
Ans. 
Concurrency is the ability of a system to execute multiple tasks simultaneously.
• Concurrency allows multiple tasks to run concurrently, improving performance and efficiency.

• Concurrency can be achieved through multithreading or multiprocessing.

• Example: A web server handling multiple requests simultaneously using multithreading.
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Q2. Explain Acid principles
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ACID principles are a set of properties that guarantee database transactions are processed reliably.
• Atomicity: Transactions are all or nothing. If one part of the transaction fails, the entire transaction is rolled back.

• Consistency: Transactions bring the database from one valid state to another. All constraints are satisfied.

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

• Durability: Once...read more
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All about coding and solving questions

Q1. All about coding questions in depth and follow up questions
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Q2. Be good in coding
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Q1. Why do you prefer python to java?
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Python is preferred over Java for software testing due to its simplicity, readability, and extensive testing libraries.
• Python has a simpler syntax compared to Java, making it easier to write and read test scripts.

• Python's extensive testing libraries like pytest and unittest provide powerful tools for test automation.

• Python's dynamic typing allows for faster development and easier maintenance of test scripts.

• Python's la...read more
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The coding test was based on quants and coding

Q1. Mostly based on development and coding
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Q1. Questions on scenario based
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Q2. How would you handle challenges in your project
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Keep your problem solving skills upto the mark

Dsa is important like arrays linkedlist stack queue and tree

Q1. Write a program for bubble sorting techniques?
Ans. 
Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.
• Start from the first element and compare it with the next element

• If the next element is smaller, swap them

• Repeat this process until the end of the list is reached

• Repeat the above steps for each element in the list

• The list is now sorted in ascending order
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Q2. Write a question for printing factorial using recursion
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What is the recursive function to print the factorial of a given number?
• Define a function that takes an integer as input

• Check if the input is 0 or 1, return 1 if true

• Otherwise, call the function recursively with n-1 as input and multiply it with n

• Print the result
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