Samsung
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Lean production system is a manufacturing philosophy that focuses on minimizing waste and maximizing efficiency.
It involves continuous improvement and elimination of non-value-added activities
It emphasizes on creating a pull-based system where production is based on customer demand
It involves the use of tools such as Kanban, 5S, and Kaizen
Examples of companies that use lean production system include Toyota, Nike, and I
OEE is calculated by multiplying Availability, Performance, and Quality percentages.
Availability is calculated by dividing the total operating time by planned production time.
Performance is calculated by dividing the actual production rate by the maximum production rate.
Quality is calculated by dividing the number of good units produced by the total number of units produced.
OEE = Availability x Performance x Quality
Explain about semiconductor in global market
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I applied via Referral and was interviewed in Nov 2022. There were 3 interview rounds.
Samsung interview questions for popular designations
I applied via LinkedIn and was interviewed in Aug 2022. There were 4 interview rounds.
Discussion with senior management
Major defects are shared with senior TSC for resolution.
Major defects are those that impact the functionality of the product or service.
Senior TSC (Technical Support Center) is responsible for resolving major defects.
Sharing major defects with senior TSC ensures timely resolution and customer satisfaction.
Examples of major defects include system crashes, data loss, and security breaches.
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I applied via Naukri.com and was interviewed in Jan 2023. There were 3 interview rounds.
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DSA round based on STL
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I was interviewed in Oct 2022.
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Thread dumps are analyzed to identify performance bottlenecks and deadlocks in the application.
To identify the root cause of performance issues
To identify deadlocks and thread contention issues
To identify long running threads and blocked threads
To identify memory leaks and excessive CPU usage
To identify issues related to garbage collection
To identify issues related to database connections and transactions
Scenarios where issues with heap dump occur and recommendations for dev team
Heap dump size is too large
Heap dump is not generated at the right time
Heap dump is not analyzed properly
Heap dump is not shared with the right team members
Recommendations: Optimize code to reduce memory usage, generate heap dump at appropriate times, analyze heap dump thoroughly, share heap dump with relevant team members
Generating heap dump and thread dump on Unix/Linux systems
For heap dump: use jmap command with -dump option
For thread dump: use jstack command
Heap dump can also be generated using kill -3
Thread dump can also be generated using kill -QUIT
Thread states in thread dump include NEW, RUNNABLE, BLOCKED, WAITING, TIMED_WAITING, and TERMINATED.
NEW: thread has been created but not yet started
RUNNABLE: thread is executing or ready to execute
BLOCKED: thread is blocked waiting for a monitor lock
WAITING: thread is waiting indefinitely for another thread to perform a particular action
TIMED_WAITING: thread is waiting for another thread to perform a particular action ...
Context switching and parsing are database operations that impact DB server performance.
Context switching is the process of switching between different tasks or threads in a CPU.
Parsing is the process of analyzing and interpreting data in a database.
Both operations require CPU resources and can cause delays in processing other tasks.
Context switching can be reduced by optimizing code and minimizing the number of thread...
I have used various tools for DB server tuning such as SQL Profiler, SQL Server Management Studio, and Database Engine Tuning Advisor.
SQL Profiler for monitoring and analyzing SQL Server activity
SQL Server Management Studio for managing and configuring SQL Server instances
Database Engine Tuning Advisor for analyzing workload and recommending index and partitioning strategies
To gather NFR from an unaware client for a new application, follow these steps:
Explain the importance of performance testing and its benefits
Provide examples of how performance issues can impact the application and business
Ask the client about their expectations for the application's performance
Discuss the application's usage scenarios and expected user load
Collaborate with the development team to identify potential pe...
Yes, virtual users can be reinitialized if they go to error state with consumable data.
Reinitializing virtual users can help in identifying the root cause of the error.
It is important to ensure that the consumable data is backed up before reinitializing the virtual users.
Reinitializing virtual users should be done only after analyzing the error and identifying the cause.
It is important to have a backup plan in case rei...
Monolithic architecture is a single, self-contained unit while microservices architecture is a collection of small, independent services.
Monolithic architecture is tightly coupled and difficult to scale.
Microservices architecture is loosely coupled and can be scaled independently.
Monolithic architecture has a single point of failure while microservices architecture is resilient to failures.
Monolithic architecture is ea...
Write Beanshell code to extract the dynamic value from the JSON response. Write BeanShell script to save the orderID from the response to an external CSV file.
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