PK Global Performance Analyst Interview Questions and Answers

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

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

PTLC stands for Performance Testing Life Cycle, which is a process followed in performance testing to ensure the performance of a system.

• PTLC involves planning, preparation, execution, and analysis of performance tests.

• It includes defining performance goals, creating test scenarios, executing tests, and analyzing results.

• PTLC helps in identifying performance bottlenecks and optimizing system performance.

• Example: In PTL...read more

Python script to capture system resources

• Use psutil library to access system resources

• Collect CPU, memory, disk, and network usage data

• Display the captured resources in a readable format

Network bandwidth constraint in testing refers to limitations on the amount of data that can be transmitted over a network during testing.

• Network bandwidth constraint can impact the performance of an application or system being tested.

• It can lead to slow response times, timeouts, or even failures during testing.

• Examples of network bandwidth constraints include limited bandwidth on a shared network, network congestion, ...read more

Timers in JMeter are used to simulate real user behavior by adding delays between requests.

• Timers help in controlling the load on the server by adding delays between requests.

• They can be used to simulate realistic user behavior by adding random or constant delays.

• Examples of timers in JMeter include Constant Timer, Gaussian Random Timer, and Uniform Random Timer.

Performance testing is a type of testing to ensure software applications perform well under expected workload.

• Performance testing evaluates the speed, responsiveness, and stability of an application under various load conditions.

• It helps identify bottlenecks, performance issues, and areas for improvement in the application.

• Types of performance testing include load testing, stress testing, and scalability testing.

• Tools ...read more

Correlation is a statistical measure that describes the strength and direction of a relationship between two variables.

• Correlation values range from -1 to 1, with 0 indicating no correlation, 1 indicating a perfect positive correlation, and -1 indicating a perfect negative correlation.

• Positive correlation means that as one variable increases, the other variable also increases. Negative correlation means that as one var...read more

Correlation is a statistical measure that describes the relationship between two variables.

• Correlation can range from -1 to 1, with 1 indicating a perfect positive correlation, -1 indicating a perfect negative correlation, and 0 indicating no correlation.

• Correlation does not imply causation, meaning just because two variables are correlated does not mean that one causes the other.

• For example, if there is a positive cor...read more

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

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

The best part of working at my last company was the supportive team environment and opportunities for professional growth.

• Supportive team environment - colleagues were always willing to help and collaborate

• Opportunities for professional growth - company provided training and development programs

• Work-life balance - flexible work hours and remote work options

• Innovative projects - had the chance to work on cutting-edge te