HCL Group Engineer Trainee Interview Questions and Answers

Attended the TCS NQT, depending on how many advanced questions and the test cases you pass in coding section, you'll get assigned Ninja (3L) Digital (7L) or prime (9L)

Q1. Code to get prime nos
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Q2. What do you know about cloud computing
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Q3. Self introduction
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Q4. Difference between cloud computing and computer networking
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Q5. If you know any os like linux
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Q6. Oops based questions, very basic if you're not from it or cse related fields but they might ask advanced questions if you're related to cs/it fields
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Q7. If you're okay Relocation
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Q8. Questions about your projects
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Q1. What is Class in Java ?
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Q2. What is OOB in Java?
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Q1. What is multithreading
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Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for better performance and resource utilization.
• Multithreading allows multiple threads to run concurrently within the same process.

• Each thread has its own stack and program counter, but shares the same memory space.

• Multithreading can improve performance by utilizing multiple CPU cores efficiently.

• Examples of multithreading include...read more
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Q2. What is hash map
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A hash map is a data structure that stores key-value pairs and allows for efficient retrieval of values based on keys.
• Hash maps use a hash function to map keys to indexes in an array, allowing for constant time retrieval of values.

• Collisions can occur when multiple keys hash to the same index, which can be resolved using techniques like chaining or open addressing.

• Example: HashMap map = new HashMap<>()
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Basic quants and reasoning

Simple array and string questions.

Q1. What is Operating System?
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An operating system is a software that manages computer hardware and provides services for computer programs.
• Manages computer hardware resources such as CPU, memory, and storage

• Provides a user interface for interacting with the computer

• Supports running applications and managing processes

• Examples include Windows, macOS, Linux, iOS, Android
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Q2. List 5 Git commands?
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Git commands are used to interact with the version control system. Here are 5 commonly used commands.
• git clone : Clone a repository from a remote server to your local machine.

• git add : Add a file to the staging area before committing changes.

• git commit -m 'commit message': Commit the changes in the staging area with a descriptive message.

• git push: Push the committed changes to a remote repository.

• git pull: Fetch and me...read more
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Python duration was 1 hour

Q1. What is the process to run a python program
Ans. 
To run a Python program, you need to write the code in a .py file, open a terminal or command prompt, navigate to the file's directory, and then run the program using the 'python' command.
• Write the Python code in a .py file using a text editor or an IDE

• Open a terminal or command prompt on your computer

• Navigate to the directory where the .py file is located using the 'cd' command

• Run the Python program by typing 'python ...read more
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Good questions easy to think and clear

Q1. SDLC life cycle
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Q2. Release management
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