TCS Performance Test Engineer Interview Questions, Process, and Tips

Q1. What kind of challange you have faced during scripting
Ans. 
One challenge I faced during scripting was handling dynamic elements on the webpage.
• Difficulty in identifying unique locators for dynamic elements

• Implementing logic to wait for elements to load before interacting with them

• Handling dynamic data inputs during script execution
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Q2. What do you monitor on server side during execution
Ans. 
Monitor server performance metrics like CPU usage, memory usage, disk I/O, network traffic, response time, and error rates.
• CPU usage

• Memory usage

• Disk I/O

• Network traffic

• Response time

• Error rates
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Q1. Explain Performance Testing Life cycle
Ans. 
Performance Testing Life cycle involves planning, preparation, execution, analysis, and reporting.
• 1. Planning: Define objectives, select tools, and create test plan.

• 2. Preparation: Set up test environment, create test scripts, and configure monitoring.

• 3. Execution: Run tests, monitor performance metrics, and collect data.

• 4. Analysis: Analyze results, identify bottlenecks, and optimize performance.

• 5. Reporting: Generate...read more
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Q2. Explain correlation and Parameterization
Ans. 
Correlation is used to handle dynamic values in scripts, while Parameterization is used to pass different values to the script.
• Correlation is used to extract dynamic values from server responses and replace them in subsequent requests.

• Parameterization is used to pass different sets of data to the script for testing different scenarios.

• Correlation is important for maintaining session integrity and ensuring accurate test...read more
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Q1. Different types of perf test
Ans. 
Different types of performance tests include load testing, stress testing, spike testing, and endurance testing.
• Load testing: Simulates expected load on the system to measure performance.

• Stress testing: Pushes the system beyond its limits to identify breaking points.

• Spike testing: Tests how the system handles sudden spikes in traffic.

• Endurance testing: Checks system performance over an extended period of time.
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Q2. Master slave concept
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Q3. Scenario based question, like when we will get the error codes
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Q1. Regular LR question
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Q2. Regular PT and monitoring questions
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Q1. Salary discussion
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Q2. Regular HR question
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Q1. What is Performance Testing?
Ans. 
Performance testing is a type of software testing that evaluates the speed, responsiveness, and stability of an application under various load conditions.
• Measures the system's response time, throughput, and resource utilization

• Identifies performance bottlenecks and areas for optimization

• Types include load testing, stress testing, and scalability testing

• Examples: simulating thousands of users accessing a website simulta
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Q2. What is correlation and Parameterization?
Ans. 
Correlation is the process of extracting dynamic values from server responses and passing them to subsequent requests. Parameterization is the process of replacing hard-coded values in scripts with variables.
• Correlation involves identifying and capturing dynamic values such as session IDs, tokens, or timestamps from server responses.

• Parameterization involves replacing hard-coded values in scripts with variables to make...read more
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