Load Runner Interview Questions and Answers
Question - 91 : - How can correlation be performed?
Answer - 91 : -
Correlation can be performed in two ways:
- Use the scan function to search for correlations and select a value from the result.
- Record a pair of scripts and then compare them to each other.
Question - 92 : - What is the benefit of running a Vuser script as a thread?
Answer - 92 : -
The advantage of running a Vuser script as a thread which allows more Vusers to be used for one load generator. Running Vuser scripts as processes utilizes a lot of memory because all of the loaded scripts use the same driver.
Question - 93 : - For what purpose, User will be using ‘continue on’ error?
Answer - 93 : -
Continue on should be set only when making Execution Logs more descriptive or adding logic to the Vuser.
Question - 94 : - What is the purpose of a LoadRunner transaction?
Answer - 94 : -
The purpose of a Load Runner transaction is to measure one or more steps/user actions of a business process.
Question - 95 : - Why do you create parameters?
Answer - 95 : -
Parameters are like script variables, and they are used to vary input to the server to emulate real users.
- Different sets of data are sent to the server whenever the script is run.
- Better simulate the usage model for more accurate testing from the Controller, and one script can emulate many different users on the system.
Question - 96 : - What is lr_output_message?
Answer - 96 : -
The lr_output_message is a function that sends notifications to the Controller Output window and to the Vuser log file.
Question - 97 : - In a Web server, Database and Network are all working fine and now, Where could be the problem?
Answer - 97 : -
The problem could be in the system itself or in the application server or in the code written for the application.
Question - 98 : - What is VuGen Recording and Scripting?
Answer - 98 : -
LoadRunner script code is obtained by recording in the ANSI C language syntax and it can be viewed in the script view.
Question - 99 : - What is Performance testing in LoadRunner?
Answer - 99 : -
Performance testing can be done by calculating the timing for both read and update transactions and check whether system functions are being performed in an acceptable time frame. In a multi-user environment, it is necessary to determine the effect of multiple transactions on the timing of a single transaction.
Question - 100 : - What is the Configuration of systems when using Load Runner?
Answer - 100 : -
The configuration of systems refers to that of the client machines in which we will run Vusers. The configuration of client machine includes its hardware settings, memory, operating system, software applications, development tools, etc.
This system component configuration should match with the overall system configuration so as to achieve the load testing objectives.