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

It was basic code syntax check test.

Q1. All regular technical questions about your skillset which is matching their requirement. This was with a Tech Lead (>13 years experienced)
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Q1. These were all heavy technical questions regarding the required skillset and your own skillset. It was conducted by 2 SSDs (Both >10 year exp.)
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Q1. This was a Manager+HR round. The Manager asked questions regarding way of working (Agile, Scrum, Safe, etc.) and questions around that. The Manager then dropped off and the HR asked questions generic quest...read more
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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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Q1. It was an algorithm question which I had to code in 30 minutes
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Q2. Java/Spring related questions were asked
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They asked me about my current project and asked me to design a system similar to that

Q1. HR reached out to me through naukri. Based on my tech stack i matched the requirements. On the first call HR asked me a lot of the questions on why i was looking out for a change, what kind of work have i ...read more
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Q1. Write a program to find last non repeating character in a given string using Java 8 functions only like Streams and Lambda's.
Ans. 
Program to find last non-repeating character in a given string using Java 8 functions only.
• Use Java 8 Streams and Lambda's to filter the string and find the last non-repeating character.

• Create a Map to store the frequency of each character in the string.

• Use the filter() method to get the non-repeating characters and find the last one using reduce().
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Q2. Given two interface, Interface A and Interface B both having the same functions in them let's say apply(). If a class implements both of these interface then which function will get implemented?
Ans. 
When a class implements multiple interfaces with the same method, it must provide a single implementation for that method.
• If both interfaces have the same method signature, the implementing class must define that method only once.

• Example: If Interface A and Interface B both have 'void apply()', the class must implement 'void apply()' once.

• The implementation can be used interchangeably for both interfaces.

• If needed, the...read more
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Q3. Given a employee table with name, ID, age, salary and ratings column. Find the top 3 employee based on the ratings.
Ans. 
Find the top 3 employees based on ratings in an employee table.
• Sort the employee table based on ratings in descending order.

• Select the top 3 employees from the sorted table.

• Return the selected employees as the result.
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Q4. Group anagram coding question.
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Q5. Given an Employee class with 3 fields name, age and salary. Make changes in the class so that any two employee objects having same names are considered duplicates.
Ans. 
Modify Employee class to consider objects with same names as duplicates.
• Add a static HashSet<String> to keep track of unique names.

• Override equals() and hashCode() methods to compare names.

• In the constructor, check if the name already exists in the HashSet and mark it as duplicate if true.
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Q1. What is polymorphism in OOPS
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Q2. How SQL Performance Can Be Optimized
Ans. 
SQL performance can be optimized by using indexes, optimizing queries, minimizing network round trips, and using proper data types.
• Use indexes on columns frequently used in WHERE clauses to speed up data retrieval.

• Optimize queries by avoiding unnecessary joins, using WHERE clauses effectively, and limiting the number of rows returned.

• Minimize network round trips by batching multiple queries into a single request.

• Use pr...read more
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Q1. Salary Expectation as per Your Role
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Q2. How will manage If you see the application is crashed
Ans. 
I will investigate the root cause, analyze logs, and work on fixing the issue to prevent future crashes.
• Investigate the crash logs to identify the root cause

• Analyze the code to understand the issue

• Implement a fix for the crash

• Test the fix thoroughly before deploying it

• Implement monitoring and alerting to catch similar issues in the future
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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.
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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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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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