John Deere Software Engineer Interview Questions and Answers

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
Ans. 
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?
Ans. 
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?
Ans. 
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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Q1. What is data structures in python
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Fibonacci, Series of numbers

Q1. Spring, AWS, projects
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Q1. Salary discussion
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