CNH ( Case New Holland) Software Engineer Interview Questions and Answers

MCQ of programming languages - c/c++/Python , basic DS and OS questions

Q1. DS and programming language questions
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Q1. Project level discussion and questions
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Aptitute with cs fundamental questions (MCQ)

Q1. Explanation of project
Ans. 
Developed a web application for tracking inventory in a warehouse
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js for back-end

• Utilized PostgreSQL database for storing inventory data
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Q2. Sql query to fetch specific column
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Use SELECT statement in SQL to fetch specific column from a table.
• Use SELECT column_name FROM table_name;

• Replace column_name with the name of the column you want to fetch.

• Replace table_name with the name of the table where the column is located.
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Q1. What are the key considerations and steps involved in designing a load balancer?
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Designing a load balancer involves scalability, reliability, and efficient traffic distribution across servers.
• Define the load balancing algorithm (e.g., Round Robin, Least Connections).

• Consider session persistence requirements for user sessions.

• Implement health checks to monitor server availability.

• Ensure scalability to handle increased traffic (e.g., horizontal scaling).

• Choose between hardware vs. software load balan...read more
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Q2. What is the process for designing a MapReduce program?
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Designing a MapReduce program involves defining the problem, data, and implementing map and reduce functions.
• 1. Define the problem: Identify the specific task you want to accomplish, such as counting word occurrences in a large dataset.

• 2. Understand the data: Analyze the input data format and structure, e.g., text files, JSON, or CSV.

• 3. Design the Map function: Create a function that processes input data and emits key-...read more
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30min and ask one coding question

30min and ask 2 coding question

Q1. Can you explain the difference between a stack and a queue and provide a real-world example where each would be used.
Ans. 
A stack is a Last In First Out (LIFO) data structure, while a queue is a First In First Out (FIFO) data structure.
• Stack: LIFO - Last In First Out. Example: browser history where the last page visited is the first to be accessed.

• Queue: FIFO - First In First Out. Example: a line at a grocery store where the first person in line is the first to be served.
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Q2. Given an array of integers, write a function to find the two numbers that add up to a specific target. How would you optimize this solution?
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