10+ Samsung Semiconductor Interview Questions and Answers

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.

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 physical layer information, while MAC messages contain data l...read more

UVM is a methodology for verifying complex designs using SystemVerilog. Blocking assignments execute sequentially, while non-blocking assignments execute concurrently.

• UVM (Universal Verification Methodology) is a standardized methodology for verifying complex designs in SystemVerilog.

• Blocking assignments in SystemVerilog execute sequentially, meaning the next statement waits for the current statement to finish.

• Non-blocking assignments in SystemVerilog execute concurrently, al...read more

A synchronous machine is a type of electric machine that operates at a constant speed determined by the frequency of the electrical supply.

• Synchronous machines are commonly used in power generation, industrial applications, and electric vehicles.

• They have a rotor that rotates at the same speed as the rotating magnetic field produced by the stator.

• Synchronous machines are more efficient than induction machines at higher power levels.

• Examples of synchronous machines include syn...read more

A synchronous motor is a type of AC motor in which the rotation of the shaft is synchronized with the frequency of the supply current.

• Uses electromagnets to create a rotating magnetic field

• Requires a separate DC power source to create the magnetic field

• Commonly used in applications where precise speed control is required, such as in industrial machinery

• Examples include synchronous motors used in air compressors, conveyor belts, and electric clocks

Synchronous speed is the speed at which the magnetic field rotates in a synchronous motor.

• Synchronous speed is determined by the frequency of the power supply and the number of poles in the motor.

• It is the speed at which the motor's magnetic field rotates in sync with the stator field.

• Formula: Synchronous Speed (rpm) = (120 * Frequency) / Number of Poles

• For example, a 4-pole motor connected to a 60 Hz power supply will have a synchronous speed of 1800 rpm.

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

DTIM stands for Delivery Traffic Indication Message, used in Wi-Fi networks to inform clients about the presence of buffered broadcast and multicast frames.

• DTIM is a parameter in the Wi-Fi beacon frame that indicates to clients how often they should wake up to receive broadcast and multicast traffic.

• It helps in saving battery life for devices by allowing them to sleep for longer periods of time.

• Clients can set their power-saving mode based on the DTIM interval specified by th...read more

Wifi AC is the 5th generation of wifi technology, while Wifi Ax is the 6th generation with improved speed and efficiency.

• Wifi AC operates on the 5 GHz band, while Wifi Ax operates on both 2.4 GHz and 5 GHz bands.

• Wifi Ax supports MU-MIMO (Multi-User, Multiple Input, Multiple Output) technology for better performance in crowded networks.

• Wifi Ax offers higher data rates and improved efficiency compared to Wifi AC.

• Wifi Ax uses OFDMA (Orthogonal Frequency Division Multiple Access)...read more

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 error handling and monitoring for API communication