Birlasoft Software Developer Trainee Interview Questions and Answers

First round consists of aptitude , Networks , OS and 2 Medium level Coding Questions

Q1. About HashMap, OOPs, SQL Queries
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Q2. DSA medium Level question, implementation of linkedlist
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Q1. What are the tech stacks used in project?
Ans. 
The tech stacks used in the project include Java, Spring Boot, Angular, and MySQL.
• Java

• Spring Boot

• Angular

• MySQL
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Q2. Again Sql queries, Project Explanation, Architecture of my project
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Q1. Personal Info, General Questions
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Q2. Problems faced in the project etc
Ans. 
In the project, we faced challenges with integrating third-party APIs and managing dependencies.
• Difficulty in understanding and implementing complex API documentation

• Issues with compatibility and versioning of different APIs

• Troubleshooting errors and bugs caused by API interactions
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Aptitude tests assume that individuals have inherent strengths and weaknesses and have a natural inclination toward success or failure in specific areas based on their innate characteristics

The aptitude interview process can vary depending on the company and the role, but here are some common elements you might encounter.

Some companies may require you to take an aptitude test, which assesses your problem-solving, analytical, and critical thinking abilities. These tests often include numerical, verbal, and logical reasoning questions.

To write about a superhero corrector that you like.
I suggest "Batman'' is my superhero
"Very Short Story, I'm Batman!"
I was having this conversation with a woman wearing a Batman T-Shirt. Admiring her shirt, I looked at her and said, by the way, I'm "Batman".

She must have forgotten she had that shirt on because she looked down momentarily, then up at me and smiled before saying, oh yeah? But, do you have a Bat Cave?

I thought about it for a second... (1 second passes)

Looked at her in they eyes and while retaining as much male ego as I could manage said, "Ok, You're Batman", broken and dejected, I just walked away. Now, I'm "Wonderman", if anyone asks.

The end.

I had no idea there was actually a real "Wonderman..."

Q1. What is Stale element reference exception
Ans. 
Stale element reference exception occurs when an element is no longer attached to the DOM.
• Occurs when an element is located in the DOM, but later removed or modified

• Common in dynamic web applications where elements change frequently

• Can be resolved by re-locating the element before interacting with it
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Q2. What is driver.get
Ans. 
driver.get is a method used in Selenium WebDriver to navigate to a specific URL.
• driver.get() is a method in Selenium WebDriver used to open a specified URL in the browser

• It is used to navigate to a new page or refresh the current page

• Example: driver.get("https://www.example.com")
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Q1. Java program to reverse a string
Ans. 
Java program to reverse a string
• Use StringBuilder class to reverse the string efficiently

• Convert the input string to a StringBuilder object

• Use the reverse() method of StringBuilder to reverse the string

• Convert the reversed StringBuilder back to a string and return
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Q2. Java program to swap numbers
Ans. 
Java program to swap numbers using a temporary variable
• Declare two variables a and b with initial values

• Create a temporary variable to store the value of a

• Assign the value of b to a

• Assign the value of the temporary variable to b
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