Samsung Semiconductor Interview Questions, Process, and Tips

Q1. Design Memory allocator for user space programs like malloc.
Ans. 
Design a memory allocator for user space programs like malloc.
• The allocator should manage memory efficiently and avoid fragmentation.

• It should support multiple threads and handle concurrent requests.

• Consider using techniques like buddy allocation or slab allocation.

• Implement features like memory alignment and garbage collection.

• Test the allocator thoroughly to ensure correctness and performance.
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Q2. System Programming concepts.
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Q1. Operating System Internals, Device Driver, Arm Architecture.
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Q1. System Programming Concepts, Domain specific(GPU, graphics) concepts related to computer graphics
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Q1. Domain(GPU) Specific Concepts, Virtual Memory address alignment question and system concepts.
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Q1. Generic HR round
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AON. duration was 90 min.

Q1. Tell me about malloc
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Q2. Largest substring without duplicates
Ans. 
Find the largest substring in an array of strings without any duplicate characters.
• Iterate through each string in the array

• Use a set to keep track of characters seen so far

• Update the start index of the substring when a duplicate character is found

• Calculate the length of the current substring and update the max length if needed
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Q1. Ofdm, equalization, estimation
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Q1. Ofdm, equalization, estimation
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Q1. How did you integrate partner API
Ans. 
I integrated partner API by collaborating with the partner's technical team and following API documentation.
• Collaborated with partner's technical team to understand API capabilities and requirements

• Reviewed API documentation to understand endpoints, authentication methods, and data formats

• Developed code to interact with partner API endpoints

• Tested API integration to ensure data is being exchanged accurately

• Implemented ...read more
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We had an aptitude test which had questions from programming and basic aptitude

Q1. Basic questions were asked related to programming and the projects that I had mentioned in my Resumè
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Q1. Questions asked based on my knowledge of WLAN and antennas
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Q1. Complete LTE and 5g basics, processing, procedure.
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Q2. Interface between the RF and MAC messages.
Ans. 
The interface between RF and MAC messages involves the communication protocol and data exchange between the radio frequency and media access control layers.
• The RF layer is responsible for transmitting and receiving radio signals, while the MAC layer manages access to the communication medium.

• The interface between RF and MAC messages includes protocols like IEEE 802.11 for wireless LANs.

• RF messages typically contain phy...read more
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