LoadRunner Interview Questions!!! Are you preparing for a Load Runner interview yet nervous? Don’t worry!

Not only is Load Runner an impressive performance and load testing tool, but our expert team has prepared a list of interview questions to help make the experience less intimidating and ensure a positive interview experience.

Everything from fundamental concepts to advanced features is covered here, giving you confidence as you begin your testing career with Load Runner.

LoadRunner Interview Questions and Answers:

1. What is performance testing and what are its two main categories?

Performance testing is a process to ensure the performance of a system or application. It can be divided into two categories: manual testing and automation. Manual testing involves physical testing, while automation uses tools to automate testing activities.

2. What are the two main types of performance testing?

The two main types of performance testing are performance testing and security testing. Performance testing focuses on validating the performance of a system or application, while security testing ensures application security.

3. What is load testing and how is it different from stress testing?

Load testing is a type of performance testing where a fixed number of users are tested to determine the application’s capacity. It measures the response time of the application.

Stress testing, or breakpoint testing, tests beyond the application’s limits to determine if it crashes or is not responding.

4. What is the Standard Service Level Agreement (SLA) and what is its role in performance testing?

The Standard Service Level Agreement (SLA) is a metric for performance testing that ensures all pages should be loaded within three to five seconds.

Beyond this time, users may feel frustrated and the application may close, leading to frustration and potential user loss.

5. What are some other methods used in performance testing?

Some other methods used in performance testing include spike testing, which verifies application behaviour during sudden loads, and valentesting, which considers future growth of the database size and ensures that the application’s performance does not deviate when the database size increases.

Failover testing is another method used to assess the application’s ability to handle the load by taking down one data centre or system and observing if the rest of the available nodes or data centres can handle the load.

6. What is the importance of value testing considering the growth of the user base?

Value testing is crucial in determining the performance of the database and identifying key areas for improvement as the number of users increases.

7. What can happen if two data methods or systems are placed in different locations and what is the solution?

If two data methods or systems are placed in different locations, geographical disturbances or power failures can occur. To avoid this, businesses need to have a backup plan or establish their data centers in different locations through load testing and stress testing.

8. What are the three main performance testing terminologies used in daily life?

The three main performance testing terminologies used in daily life are throughput, response time, and thing time. Throughput refers to the amount of data transmitted from one location to another.

Response time measures the speed at which pages load. Thing time is the waiting time between pages.

9. What is P-Clod and how is it determined through performance testing?

P-Clod refers to the maximum number of users visited per day. It is determined through stress testing, which reveals the breaking point of the system.

10. What is the difference between vertical and horizontal scalability in performance testing?

Vertical scalability increases hardware capacity without changing the number of systems, while horizontal scalability keeps hardware safe in each system while increasing the number of servers supporting the application.

11. What are the potential causes of failure in performance testing?

Failure in performance testing can result from geographical disturbances, response time, P-Clod, average load, break point, stability, and scalability.

12. Why is it important to understand the business and its requirements in performance testing?

It is important to understand the business and its requirements in performance testing to deliver a successful approach.

This emphasizes the need for a clear understanding of the application architecture, which helps in identifying the interconnected components of the system or application used for monitoring during performance testing.

13. How does application implementation technology play a role in performance testing?

Application implementation technology plays a key role in performance testing as it plays a role in scripting.

Complex applications like dotnet applications may require extensive scripting time, making it essential to have an advanced knowledge of the background implementation of the technology.

14. Why is it important to communicate with developers and product owners during performance testing?

Communicating with developers is crucial when encountering issues with the application as they can provide insight into the application’s functionality. Product owners can help prepare for upcoming features and resolve performance issues related to the database.

15. Why is it important to start performance testing only when the application is functionally stable?

Starting performance testing only when the application is functionally stable is important to avoid wasting time and resources on scripting efforts that may need to be duplicated in the future. From this blog you can learn more about LoadRunner scripting interview questions.

16. What is the importance of identifying test script flows during performance testing?

Identifying test script flows is essential, especially for business-critical flows. Performance testing should not be conducted on every application functionality as it may not add value to the overall performance of the system.

17. How can testing a specific feature in an application help identify performance bottlenecks?

Testing a specific feature in an application can help identify any performance bottlenecks as it may not be used by the expected number of users. Identifying the right functionality is crucial for performance testing.

18. What is business critical flows and why are they important to assess during performance testing?

Business critical flows involve assessing feature criticality, such as the payment process on Amazon.com, which can lead to business loss if errors occur repeatedly.

Analyzing feature usage in production can help determine the appropriate performance flow for testing.

19. Why is it important to gather business requirements or business flows from product owners or businesses during performance testing?

Advice from product owners or businesses can help gather the right business requirements as they understand the behavior of users and the features that are likely to be used by the majority of users. Documenting these flows helps keep track of what needs to be covered.

20. What approach can be used for performance testing of a brand-new application?

A standard approach like the stage step approach can be used to increase the load and determine the stability of the application. Benchmarking for existing and maintenance applications can also help identify which features are already being used in the right business critical flows and their respective load models.

21. Why is gathering business requirement analysis and approaches essential for performance testing?

Gathering business requirement analysis and approaches is essential for identifying and addressing performance bottlenecks in various applications.

By utilizing database administrators and application logs, businesses can better understand and address their specific needs and requirements.

22. What are the main components of the load testing system?

The load testing system consists of virtual user generators, controllers, and load agents. The virtual user generator is used for scripting and capturing browser traffic or application traffic using a test script called dot usr.

The controller is the heart of the load testing system, taking scripts from the virtual user generator and setting settings like the number of users and test duration. Load agents are end components that generate actual load on the targeted system.

23. What is the role of an analysis tool in performance testing?

An analysis tool can be used to analyze the results generated by the controller, which can be saved with the dot IR extension. The analysis tool can help create beautiful graphs and metrics from the load testing results.

24. How many load agents can be configured in the controller for performance testing?

One load agent can be configured in the controller, or multiple load agents can be configured in real-time depending on the load requirements. When executing hundreds or thousands of user load, one load agent may not be sufficient.

25. What is the role of the IR bridge dot exe component in the controller?

The IR bridge dot exe component keeps track of all connected load agents to the controller. Once the execution begins, the controller generates a process called mmdrb dot exe, which generates the load on the targeted environment.

26. What are the steps to create a web HTP HTPM L script in LoadRunner?

To create a web HTP HTPM L script, select the protocol you want to use and provide a meaningful name for your script. Save the script under the c-scips folder by default, or choose a different location.

Once the installation is complete, the LoadRunner creates a folder called VUGen, which is a virtual user generator.

27. What is the purpose of the installation explorer and what options does it offer?

The installation explorer is used to create a virtual user generator for web HTTP HTM L protocol. It includes various menus, such as save, undo, regenerate script, and recording options. The save button allows users to save changes, while the undo button allows users to undo changes.

The regenerate script option brings back the script to its previous state after completion of recording.

28. What buttons does the record and compilation buttons execute and what is the purpose of the step-by-step replay button?

The record button starts the recording process, the compilation button compiles the script without any errors, and the step-by-step replay button executes the recorded script.

29. What does the output pan display during the script recording and what does the snapshot pan visualize?

The output pan displays the content generated during the script recording, and the snapshot pan visualizes images or HTML pages.

30. Where can the JDK be downloaded from and what is the purpose of choosing the appropriate version for your system?

The JDK can be downloaded from Google.com, and the appropriate version for your system (whether it’s 64-bit or 32-bit) needs to be chosen and accepted in the terms.

31. How to access the Tomcat application that is installed as a service on your machine?

we can access the Tomcat application by typing “localhost:80” in your browser if it’s running. If it’s not started, you can click on the “start” button to launch it.

32. Where should you place the JPIDS Store web application file before deploying it in the Tomcat application manager?

You should place the JPIDS Store web application file (the “web.xml” file) on your desktop before deploying it in the Tomcat application manager.

33. How can you deploy the JPIDS Store application in the Tomcat application manager?

Once you have placed the JPIDS Store web application file on your desktop, you can open the Tomcat application manager, select the file, and click on “deploy” to deploy the application.

34. Why is it necessary to understand the basics of C programming to use the JPIDS Store application in LoadRunner?

The JPIDS Store application uses the C programming language, so it’s essential to have a good understanding of C basics to create and maintain the application.

35. What is a character array in C programming?

A character array is a group of characters that can be stored into a variable. By default, the first declaration name does not have a specific size to be stored, and it cannot hold more than one character. To store a particular name, you can use the name “tester” instead of “tester”.

36. How can you perform mathematical operations in C programming?

In C language, you can perform basic operations using a generator and declare another variable called “total”. To perform mathematical operations of addition, use the plus symbol and the plus symbol.

To determine if the total value is being assigned, use the C language print statement, print F statement, or sum equal to percent. This is a basic C syntax that you must remember.

37. Why can’t we use the default printing statement, print F, in the C virtual user generator and what should be used instead?

The default printing statement, print F, is not working in the C virtual user generator because it is a blender. Instead, a special function called Lr output message function should be used to print something on the output console or replay log.

38. How can we handle strings and literals in C to store first name and last name into character arrays and combine them into one single character array?

We can declare two-character arrays for first name and last name and create another character array to hold the total size of the two arrays.

We cannot use automatic operations to combine the first name and last name, but we can use built-in C string functions, such as strcpy, to copy a string value to another character array or string.

39. How can we combine the values of first name and last name into a single character array using built-in C string functions?

We can efficiently combine the values of first name and last name into a single character array by using the strcpy function to copy the last name into the full name character array, ensuring that the existing content is replaced with the new value without losing any existing content by using a steer C80 function to concatenate the last name into the full name for the first time and append the new value without losing any existing content.

40. What are control structures in C language and why are they essential?

Control structures in C language, such as the if statement, else, while, and do-while statement, control the way of execution of the program and are essential in our day-to-day life in virtual user data.

They help to make decisions based on conditions and control the flow of the program.

41. What is the purpose of the if statement in programming, and how is it used in C language?

The if statement is used to compare two variables in programming, and in C language, it is used to check if both values are equal or not.

If the condition is true, the underlying statement is executed. If the condition fails, only the else statement is executed.

42. What is the purpose of the else statement, and when is it executed?

The else statement is used to print something else when the condition in the if statement fails. It is only executed when the condition in the if statement is not met.

43. What is used to print something repeatedly or phi times in the output log in C language?

The first statement is used to print something repeatedly in the output log in C language. It consists of initialization, testing the condition, and either increment or decrement.

For example, to print “hello” ten times, the first statement would start from the first iteration and print “hello” until the value becomes ten.

44. How is the loop value increased in a loop, and what operator is used for this?

The loop value is increased by using the plus operator. The loop is incremented by one, and the loop is executed again. If the loop value is less than or equal to ten, it increments the value.

45. Why is the if statement crucial in programming, especially when implementing complex scenarios?

The if statement is crucial in programming because it ensures that the underlying statement is executed correctly and that the output is printed correctly, especially when implementing complex scenarios.

46. What type of loop is used in web best tp scripts, and how does it work?

In web best tp scripts, a while loop is used to execute complex scripts. It works similarly to a for loop, but the condition to break the loop must be explicitly mentioned. The while loop will execute until the condition is met or the loop fails.

47. What is the “do while” loop, and how does it differ from other loops?

The “do while” loop executes the underlying statement at least once without checking any conditions. For example, if the loop value is 10 and the loop less plus is set to “while loop less plus,” the loop will execute the statement “hello” at least once.

It differs from other loops because it executes the statement at least once before checking the condition.

48. What is the first step in recording applications using the web HTTP protocol with LoadRunner?

The first step is to create a web HTTP protocol for recording get functions and save the data as a demo script. From this blog, you can also learn LoadRunner functions interview questions

49. What buttons are used to record the web flow in LoadRunner?

The code button is used to record the web flow, and the record button is used to launch a window.

50. What are the recording options available when recording applications using the web HTTP protocol in LoadRunner?

The options include recording into action, selecting the web browser, addressing the first page, and record settings.

51. What is the purpose of the user in it action and user in recording applications using the web HTTP protocol in LoadRunner?

The user in it action and user are default actions created by the virtual user generator, and the script that generates will go into the action method.

52. What is the focus of the text on recording traffic using a LoadRunner?

The text focuses on the mapping and filtering option, network network level settings, socket level information, and session numbers.

53. What should be done if the recording process is interrupted or if a debug feature is not working in LoadRunner?

The user can click on “pass” to resume the recording process, and if needed, click on the record button to generate the captured requests.

54. What is the purpose of the recording pointer in LoadRunner?

The recording pointer is used to record everything into action, which is useful for creating new actions.

55. Why is it important to give comments before each step in the recording process in LoadRunner?

Giving comments before each step in the recording process helps to understand the events that are increasing as the page loads and ensures that the recording process is going correctly.

56. What are the steps involved in filling in the login credentials during the recording process of web applications?

The user enters their username and password, and the recording process continues. The recording pointer is used to create a rendezvous point, and the user must provide comments before making any action on the browser.

57. How does the process of recording web applications using various browsers begin?

It begins by demonstrating how to use a virtual user generator (VMG) to generate a script for a web application. The user selects an option and then clicks on the book environment, where they input their preferences and comments. The recording law is then used to ensure that the recording process is successful.

58. What are the advanced recording options available with web HTML recording?

The first option is the HTML-based recording, which generates context-based scripts. The script has two types: HTML content-based and URL-based.

59. What are the differences between the two types of HTML-based scripts?

The first option is a script describing user action, which generates APIs for the LoadRunner using web links and submits. The second option is a script describing user action, which generates only the farm post content of the particular script.

60. What is the importance of proper comments during the recording process?

Without comments, the login steps will be combined as a single entity, making it difficult to identify whether the requests belong to the application.

61. How is a script regenerated in a script lab?

The regenerative option is used to remove any changes made to the script and create a new one. The script is generated using context-based options, such as web links and web submit forms.

62. What types of requests can be generated using the script generator?

The script generator generates both context-based and explicit URLs, which are useful for generating non-HTML content, including background images, JavaScript to Vbscripts, or activates Applets.

63. What is the use of the web concurrent start and end option in the script generator?

It fires all requests together in one instance and inserts the LoadRunner to fire all requests associated with the main request.

64. What additional resources can be generated using the script generator?

The script generator generates additional resources, such as background images, JavaScript to Vbscripts, or activates Applets, as extra resources. The script is then regenerated to ensure that all changes have been removed.

65. What are some common recording options used in the industry to mimic browser activity?

The industry commonly uses various recording options, including URL base, web URL, and web custom request.

66. What is the web custom request option used for?

It is used when web web submit data is insufficient to generate two requests.

67. What are the different types of requests in load under?

Chronus requests and sync runs are requests that receive an immediate response from the server, while synchronous requests receive a synchronous response.

68. What are some advanced options available in the protocols section of load under?

HTTP properties include options such as reset context for each iteration, generate web-rich find function for page titles, add comment through script HTTP errors while recording, generate web-ad cookie function, and generate steps for web-sauptet traffic. Passwords are automatically encrypted and created as parameters.

69. What is the synchronous scan feature used for?

It generates options for processing requests, such as generating requests for sync. It is not necessary to worry about the synchronous scan itself, as it will generate some options related to generating requests for sync.

70. What are the different correlation configuration options in load under?

Rules scan records can replace, record replace can configuration, and rules are part of the correlation concept and are automatically generated by load under.

71. What is a recording scheme and what can it include?

A recording scheme includes headers, content types, and resources. And set explicit headers while recording using the header option, or use the default option to set specific content.

Load and error will automatically handle important headers and non-resources if you do not want to record.

72. What are the three categories of HTTP methods available for web applications using the web-based DML protocol?

The three categories of HTTP methods available for web applications using the web-based DML protocol are get, post, and resend.

73. What are the three options available in the capture level of the DML protocol?

The capture level of the DML protocol offers three options: socket level data, network level server address mapping, and exclusion exclusions.

74. What is the resend method used for?

The resend method is used when dealing with advanced server-side frameworks like GWD and SAP web frameworks. It requires extra specifications from load or not to generate the request.

75. What is the HTTP (Host-to-Position) method and what does it involve?

The HTTP (Host-to-Position) method is a crucial aspect of web application programming (API) that allows for the execution of HTTP requests.

It involves passing user information, such as username and password, to the server, which is then processed by the server. The server then updates the resource, such as the password, based on the request.

76. What is the option method and when is it used?

The option method is a less common HTTP method used to request information about the communication options available between the client and server.

It is used when requesting the server for specific resources and the server responds with an appropriate method type, such as get, post, put, or anything else.

77. What is the delete method and how is it used?

The delete method is a straightforward HTTP method that allows the server to delete content or operations on the server. It can be used to delete a username or user account.

78. What is the connect method and how is it used?

The connect method is a less commonly used HTTP method that creates a tunnel between the client and the server for a specific page. It is rarely used and most requests are implemented around get, post, and put methods.

79. Why is it important to understand HTTP methods for web-based applications?

Understanding HTTP methods is essential for learning web HTML protocol and creating successful scripts. Each method in the script may be either get or post, which sends extra information to the user and server.

80. What script customization options are available in HTTP and why are they important?

Script customization options in HTTP are important for web-based applications as they allow for specific modifications to be made to the script after recording.

This includes the get and post methods, which send extra information to the user and server. Once the script recording is complete, it is important to take a backup of the script to ensure that any changes made during customization are not lost.

To sum up, LoadRunner is an effective performance testing tool that can be used to measure and simulate how an application behaves under different loads and circumstances.

In order to meet varied testing needs, it supports a number of protocols, including HTTP, FTP, and TCP. It also provides a range of recording and scripting capabilities.

It is essential to comprehend the many HTTP methods, including GET, POST, PUT, DELETE, and OPTIONS, and how to use them in order to script and customize LOADRUNNER effectively.

After making any necessary modifications, we can make sure that the script is not lost by making a backup copy.

All things considered, LoadRunner is a vital instrument for guaranteeing the performance, scalability, and dependability of web applications.

I hope you will mark your place in your next interview.

All the best!!!