Samsung Research Full-time Job Interview Questions, Process, and Tips for Experienced

Q1. Explain xgboost
Ans. 
XGBoost is a popular machine learning algorithm known for its speed and performance in gradient boosting.
• XGBoost stands for eXtreme Gradient Boosting.

• It is an implementation of gradient boosted decision trees designed for speed and performance.

• XGBoost is widely used in machine learning competitions and has become a popular choice for data scientists.

• It can handle missing data and is optimized for parallel processing.

• XG...read more
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Q2. Explain decision tree
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Decision tree is a predictive modeling tool that uses a tree-like graph of decisions and their possible consequences.
• Decision tree is a supervised learning algorithm used for classification and regression tasks.

• It breaks down a dataset into smaller subsets based on different attributes.

• Each internal node represents a feature or attribute, each branch represents a decision rule, and each leaf node represents the outcome...read more
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A standard aptitude test consisting of multiple-choice questions that needed to be completed within a specific time frame was administered. It has been four years, so I do not recall the details.

Samsung's coding test consists of solving a single complex question over a duration of four hours. The time complexity typically holds less significance; some questions can even be tackled with O(n^3) complexity. The emphasis is on our understanding of the problem statement and our approach to coding the solution. Since the solution tends to be quite extensive, requiring substantial code, optimization is not generally the primary focus. It is important to offer a reasonable solution. Topics such as graphs, binary search, and object-oriented programming are commonly featured in the test.

Q1. It was a technical discussion round. Usually Java & Android are a plus to have because Samsung focuses on it a lot. But, becasue I was experienced in Python, Django and Machine Learning instead, I asked i...read more
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Q2. I remember only 1 question from Data Structures which is : Detecting a cycle in Linked list. I gave a solution to that. After that, I was asked to write a proof why does this concept works. After soem thin...read more
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Q3. There were a lot of questions on Operating Systems like on Deadlock, Partitionn and Scheduling related questions. At the end, I was given a small problem with jobs coming in a queue at certain timestamps, ...read more
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Q1. I'll never forget this interview. It was a roast session 😂 Interviewer roasted the hell out of me. At that time, I remembered I read about Stress Interviews in the management subject and that exactly was ...read more
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Q1. 1. What was past company work process and roles and responsibilities? 2. Write test cases on pen and atm machine. 3. Manual testing interview questions.
Ans. 
Answering questions related to past work experience, test cases, and manual testing in an engineering interview.
• Past company work process involved collaborating with team members to design and implement engineering solutions.

• Roles and responsibilities included coding, testing, and debugging software, as well as participating in project meetings and providing technical support.

• Test cases for a pen could include checking...read more
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Q1. Salary discussion.
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Q1. What are locators in selenium
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Locators in Selenium are used to identify web elements on a web page. They are essential for interacting with elements during test automation.
• Locators are used to find and interact with web elements on a web page.

• Common types of locators include ID, name, class name, tag name, link text, and XPath.

• Using the right locator strategy is crucial for stable and reliable test automation.

• Example: driver.findElement(By.id("user
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Q2. Write a Java program to print 2nd largest element in an array
Ans. 
Java program to find 2nd largest element in an array of strings
• Convert array elements to integers for comparison

• Sort the array in descending order

• Return the element at index 1 as the 2nd largest element
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Q1. Why do you want to join samsung?
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Q1. Types of instruments
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Instruments used in electrical and instrumentation engineering include sensors, transmitters, controllers, and recorders.
• Sensors: devices that detect changes in physical properties and convert them into electrical signals (e.g. temperature sensors)

• Transmitters: devices that send signals from sensors to control systems (e.g. pressure transmitters)

• Controllers: devices that regulate the operation of systems based on input...read more
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Q2. Types of control valve
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Control valves are used to regulate the flow of fluids in a system by varying the size of the flow passage.
• Types of control valves include globe valves, butterfly valves, ball valves, and diaphragm valves.

• Control valves can be classified based on their action (linear or rotary), flow characteristics (equal percentage, linear, or quick opening), and body type (single-seated, double-seated, or cage).

• Globe valves are comm...read more
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Q1. Technical information
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Q1. About previously worked projects
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