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Load Runner Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM AUTOMATED TESTING TOOLS INTERVIEW QUESTIONS LOAD RUNNER INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Load Runner Interview Questions & Answers - Learning Mode

LoadRunner is a performance and load testing product by Hewlett-Packard (since it acquired Mercury Interactive in November 2006) for examining system behaviour and performance, while generating actual load.

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Load Runner Interview Questions & Answers - Learning Mode
Try Load Runner Interview Questions & Answers - Exam Mode
Question: How many types of checkpoints are available in LoadRunner?

Answer: LoadRunner provides two types of checkpoints-
? Text Checkpoints
? Image Checkpoints
Source: CoolInterview.com
Question: Explain the following functions: - lr_debug_message

Answer: The lr_debug_message function sends a debug message to the output log when the specified message class is set. lr_output_message - The lr_output_message function sends notifications to the Controller Output window and the Vuser log file. lr_error_message - The lr_error_message function sends an error message to the LoadRunner Output window. lrd_stmt - The lrd_stmt function associates a character string (usually a SQL statement) with a cursor. This function sets a SQL statement to be processed. l Source: CoolInterview.com
Question: What?s the LoadRunner Components?

Answer: LoadRunner have the five components-
? Vuser Generator
? Controller
? Load Generator
? Luncher
? Analysis
Source: CoolInterview.com
Question: What is the URL based script?

Answer: It records all requests and resources from server. Source: CoolInterview.com
Question: How to load LoadRunner Agent?

Answer: Controller insturct the RCl to lunch the LoadRunner Agent. Source: CoolInterview.com
Question: What?s the Pause command?

Answer: It will change the status of running vuser to pause. Source: CoolInterview.com
Question: What does vuser_init action contain?

Answer: Vuser_init action contains procedures to login to a server. Source: CoolInterview.com
Question: What are process for developing a Vuser script?

Answer: There are five steps for developing a Vuser Script-
? Record Vuser script
? Edit Vuser script
? Change Run Time Setting
? Run Vuser script in stand alone machine
? Incorporate the Vuser script into loadrunner scenario
Source: CoolInterview.com
Question: Where we can set the number of repititions?

Answer: We can set the number of repititions in Run Time Settings. Source: CoolInterview.com
Question: When do you do load and performance Testing?

Answer: We perform load testing once we are done with interface (GUI) testing. Modern system architectures are large and complex. Whereas single user testing primarily on functionality and user interface of a system component, application testing focuses on performance and reliability of an entire system. For example, a typical application-testing scenario might depict 1000 users logging in simultaneously to a system. This gives rise to issues such as what is the response time of the system, does it cra Source: CoolInterview.com
Question: What is correlation? Explain the difference between automatic correlation and manual correlation?

Answer: Correlation is used to obtain data which are unique for each run of the script and which are generated by nested queries. Correlation provides the value to avoid errors arising out of duplicate values and also optimizing the code (to avoid nested queries). Automatic correlation is where we set some rules for correlation. It can be application server specific. Here values are replaced by data which are created by these rules. In manual correlation, the value we want to correlate is scanned and cr Source: CoolInterview.com
Question: What is a function to capture dynamic values in the web Vuser script?

Answer: Web_reg_save_param function saves dynamic data information to a parameter. Source: CoolInterview.com
Question: What is the relation between Response Time and Throughput?

Answer: The Throughput graph shows the amount of data in bytes that the Vusers received from the server in a second. When we compare this with the transaction response time, we will notice that as throughput decreased, the response time also decreased. Similarly, the peak throughput and highest response time would occur approximately at the same time. Source: CoolInterview.com
Question: How did you find database related issues?

Answer: By running ?Database? monitor and help of ?Data Resource Graph? we can find database related issues. E.g. You can specify the resource you want to measure on before running the controller and than you can see database related issues Source: CoolInterview.com
Question: What?s the Log?

Answer: Log is level of information which we want to gather during run time. Source: CoolInterview.com
Question: What is load testing?

Answer: Load testing is to test that if the application works fine with the loads that result from large number of simultaneous users, transactions and to determine weather it can handle peak usage periods. Source: CoolInterview.com
Question: What?s the Controller?

Answer: It organize, drive, manage, and monitor the load test. Source: CoolInterview.com
Question: What?s the running Vuser graph?

Answer: It displays the number of Vusers that execute the Vuser script each seconds of scenario run. Source: CoolInterview.com
Question: What is the Goal-Oriented Scenario?

Answer: Goal-Oriented scenario allows loadrunner controller to create scenarion based on goal which you specified. Source: CoolInterview.com
Question: How do you debug a LoadRunner script?

Answer: VuGen contains two options to help debug Vuser scripts-the Run Step by Step command and breakpoints. The Debug settings in the Options dialog box allow us to determine the extent of the trace to be performed during scenario execution. The debug information is written to the Output window. We can manually set the message class within your script using the lr_set_debug_message function. This is useful if we want to receive debug information about a small section of the script only. Source: CoolInterview.com

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