Alkem Laboratories Interview Questions and Answers

Use lr_trim_string function to remove trailing and leading spaces in Loadrunner

• Use lr_trim_string function to remove leading and trailing spaces

• Syntax: lr_trim_string("string", "both", " ")

• Example: lr_trim_string(" example ", "both", " ") will return "example"

Load generator in LR simulates virtual users to generate load on the application under test.

• Load generator simulates virtual users by sending requests to the application under test.

• It helps in generating load on the application to measure performance.

• Load generator can be configured to simulate different types of user behaviors and scenarios.

• It collects performance metrics and generates reports for analysis.

• Examples: JMeter, LoadRunner, Gatling.

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 reports, communicate findings, and make recommendations.

• E...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 results.

• Parameterization helps in simulating real-world s...read more

Lr_exit is used to end a Vuser script gracefully, while Lr_abort is used to forcefully terminate a Vuser script.

• Lr_exit is used when you want to end the script normally without any errors.

• Lr_abort is used when you want to forcefully stop the script execution due to an error or other condition.

• Lr_exit allows the script to finish executing any remaining actions before ending.

• Lr_abort immediately stops the script without completing any remaining actions.

• Example: Lr_exit can be u...read more

Throughput is the amount of data transferred successfully from one place to another within a given period of time.

• Throughput is a measure of the rate of successful data transfer.

• It is usually measured in bits per second (bps) or packets per second (pps).

• Higher throughput indicates better performance of the system.

• For example, in a network, throughput can be the number of packets successfully delivered from sender to receiver in a second.

Testing Life Cycle involves planning, designing, executing, and analyzing tests to ensure software quality.

• Planning phase involves defining test objectives, scope, and resources.

• Design phase includes creating test cases, scripts, and data.

• Execution phase involves running tests and collecting results.

• Analysis phase includes reviewing results, identifying defects, and reporting.

• Iterative process to improve software quality and performance.

• Example: Using tools like JIRA for test...read more