Lumens Technologies Software Developer Interview Questions and Answers

Pointer and linked list

Pure technical on kernel programming

Q1. Pure technical questions on background project
Add your answer
Q2. Mutex semaphore and spinlock
Add your answer
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
Answered by AI
Add your answer

Q1. Why you want to join this company
Add your answer

Q1. Ofdm, Fixed point, sampling theorem, digital filters,
Add your answer
Q2. Previous work clarity
Ans. 
Previous work clarity is essential for successful collaboration and understanding of project requirements.
• Clearly explain the projects you have worked on in the past, including your role and responsibilities

• Provide examples of how you communicated with team members to ensure clarity in project goals

• Discuss any challenges you faced in previous projects and how you overcame them
Answered by AI
Add your answer

Q1. Fft, ofdm, CP, sampling theorem, previous experience,
Add your answer
Q2. C basics, memory layout, function pointer, big small endian, bit manipulation, zero padding in structures
Add your answer

Bit manipulation, memory layout, interrupts, semaphore mutex, implement memcpy, sorting, algo to share resource equally

Q1. Previous work experience, general attitude
Add your answer

Q1. This was more like shortlisting round with manager. Asked about resume and previous work experience. Not much Technical questions.
Add your answer

Q1. Python programming questions, Basics
Add your answer
Q2. Python oops concepts
Add your answer
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
Answered by AI
Add your answer
Q4. Python memory management
Add your answer
Q5. Basic Devops questions
Add your answer

Q1. Implement atoi in c language
Add your answer
Q2. Remove the head of the linked list mainitning the remaining links
Add your answer

Q1. Questions related to ipc
Add your answer
Q2. Question on data structures
Add your answer
Q3. Some on arm architecture
Add your answer

OS Networks C Programming Aptitude Mcqs

Two Coding questions and were of medium to hard level.