Lumen Technologies Intern Interview Questions and Answers for Freshers

Advanced questions in coonputer architecture, general aptitude, c++programs, digital electronics

Q1. Entire ASIC Design Flow, Physical Design flow and questions related to that, CMOS basic questions, academic projects done.
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Q1. Introduction about myself and my subjects of interest.
Ans. 
I am a passionate individual with a background in computer science and a keen interest in artificial intelligence and machine learning.
• Studied computer science at XYZ University

• Completed projects in AI and ML

• Attended workshops and seminars on emerging technologies
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Q2. Then I was asked about my first project which was on Risc v.
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Q3. Then i was asked about my second project which was based on asynchronous fifo design.Following this I was asked the difference between synchronous and asynchronous fifo and then the interviewer gave me a F...read more
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Q4. Then he gave me a Digital electronics numerical to solve.
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Q5. Then he asked me to design a flipflop using mux.
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Q6. Then he asked me about difference between mealey and moore machine and which one is better in which case.
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Q7. At last he asked me 3 puzzles to solve.
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Quite easy, implementation questions were there

Q1. Implement Hash Maps
Ans. 
Hash maps are data structures that store key-value pairs and provide efficient lookup, insertion, and deletion operations.
• Hash maps use a hash function to convert keys into array indices.

• Collisions can occur when multiple keys hash to the same index, requiring collision resolution techniques.

• Common collision resolution methods include chaining and open addressing.

• Hash maps have an average time complexity of O(1) for ba...read more
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Q1. Discussion on the past experience. Question on technical aspects of supply chain, like EOQ, MOQ, reorder point, safety stock, etc.
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Q2. Explain previous experience, and tools used.
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DSA MCQ on Computer Core Subjects

Questions related to trees, graphs, dynamic programming

Q1. How does python handle multiple object types ??
Ans. 
Python uses dynamic typing to handle multiple object types, allowing variables to change types during runtime.
• Python uses dynamic typing, meaning variables can hold different types of objects at different times.

• Python does not require explicit declaration of variable types, allowing for flexibility in handling multiple object types.

• Python supports polymorphism, allowing objects of different types to be treated as insta...read more
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Q2. What happens when I cast a python variable ??
Ans. 
When you cast a Python variable, you are converting its data type to a different type.
• Casting is the process of changing a variable's data type.

• For example, casting a string to an integer: x = '10' -> int(x) = 10

• Casting can result in data loss if the conversion is not possible or accurate.
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Easy to crack the interview DSA

Q1. What are ur skills and explain ur projects?
Ans. 
I have strong skills in programming, data analysis, and project management. I have completed projects in web development, machine learning, and database management.
• Programming: Proficient in languages such as Python, Java, and JavaScript.

• Data Analysis: Experience with tools like Excel, SQL, and Tableau.

• Project Management: Successfully led a team to develop a web application for a local business.

• Web Development: Created...read more
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