Lumens Technologies Associate Manager Interview Questions and Answers

Q1. Implement a malloc function.
Ans. 
Implementing a malloc function involves dynamically allocating memory in C programming.
• Use the malloc function from stdlib.h library to allocate memory on the heap.

• Remember to check if the memory allocation was successful by checking if the returned pointer is not NULL.

• Don't forget to free the allocated memory using the free function to avoid memory leaks.
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Q1. This was more like shortlisting round with manager. Asked about resume and previous work experience. Not much Technical questions.
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Q1. Python programming questions, Basics
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Q2. Python oops concepts
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Q3. What is module in Python
Ans. 
A module in Python is a file containing Python code, which can define functions, classes, and variables.
• Modules help organize Python code into reusable components

• Modules can be imported into other Python scripts using the 'import' keyword

• Examples of modules in Python include math, random, and os
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Q4. Python memory management
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Q5. Basic Devops questions
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Pointer and linked list

Pure technical on kernel programming

Q1. Pure technical questions on background project
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Q2. Mutex semaphore and spinlock
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Q3. How you will achieve multi threaded programming
Ans. 
Multi-threaded programming can be achieved by creating multiple threads that run concurrently.
• Identify the tasks that can be executed in parallel

• Create threads using threading libraries in the chosen programming language

• Synchronize the threads to avoid race conditions and deadlocks

• Use locks, semaphores, and mutexes to manage shared resources

• Optimize the performance by balancing the workload among threads
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Q1. Why you want to join this company
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Q1. Digital circuit Designing for adders, mux, couter, FSM. In Verilog Blocking and non-blocking assignments, RAM RTL code, Datatypes etc
Ans. 
Digital circuit design in Verilog including adders, mux, counter, FSM, RAM RTL code, datatypes, and blocking/non-blocking assignments.
• Verilog is a hardware description language used for digital circuit design.

• Adders are used for arithmetic operations, mux for data selection, counter for counting, and FSM for control logic.

• Blocking assignments are executed sequentially, while non-blocking assignments are executed concur...read more
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Q1. Introduction, Want to join or not
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