Performance testing jmeter interview questions and correct Answers

To view the live version of the page, click here. © Copyright by Interviewbit JMeter Interview Questions for Freshers 1. Discuss some of the features of JMeter. 2. What is Distributed Testing? 3. In JMeter, how do you set up a master-slave configuration? 4. Explain the usage of Regular Expression in JMeter. Also discuss the difference between ‘contains’ and ‘matches’. 5. Discuss about Samplers and Thread Groups in JMeter. 6. What are the different types of processors available in JMeter? 7. Mention the order of execution of JMeter test plan elements. 8. Explain configuration elements in JMeter. 9. What are the various data parameterization options in JMeter? 10. What is assertions in JMeter? 11. What is the maximum number of threads that should be allowed on a single system? 12. Discuss Gaussian and Poisson Timers. 13. In JMeter, explain the purpose of correlation. 14. What are the various kinds of listeners? 15. What exactly is a workbench? 16. Discuss the working of the Test Script Recorder. 17. What protocols are supported by JMeter? 18. Explain the JMeter variable and function syntax. JMeter Interview Questions for Experienced JMeter Interview Questions for Experienced ( Continued) 19. Is it possible to use JMeter to record actions using a mobile device? If so, how would you go about doing it? 20. Why is running JMeter in Non-GUI mode recommended? 21. How do you perform spike testing with JMeter? 22. Is it possible for you to use JMeter to run Selenium scripts? If so, how would you go about doing it? 23. In JMeter, how do you handle sessions and cookies? 24. What are the crucial steps in the JDBC (Java Database Connectivity) request testing process? 25. What is BeanShell scripting? 26. Write the code to write data stored in a JMeter variable to a CSV file. 27. What is a Root Certificate Authority (CA) certificate? 28. What factors influence the number of threads that should be generated per system? 29. What are the most significant plugins that JMeter supports? 30. In JMeter, what are the different sorts of controllers? 31. How is Ultimate thread group different from other thread groups? What is JMeter? The Apache JMeter application is free and open-source software that is made entirely of Java and is used to load-test and measure the performance of applications and different software products. It was created to test Web applications, but it has now been expanded to include other test functions like performance testing, load testing and stress testing. JMeter can be used to test the performance of both static and dynamic assets, as well as Web dynamic applications. It can be used to simulate a heavy demand on a server, set of servers, network, or item in order to test its strength or examine the entire performance under various load scenarios. JMeter is a protocol analyzer, not a browser. JMeter appears to be a browser (or rather, several browsers) when it comes to web services and remote services, but it does not do all of the operations that browsers do. JMeter, in particular, does not run Javascript present in HTML pages. It also doesn't produce HTML pages like a browser (you can examine the answer as HTML and so on, but the timings aren't included in any samples, and only one sample from each thread is ever displayed at a time). Learn More. JMeter 1. Discuss some of the features of JMeter. The following are some of the features of Apache JMeter: The ability to load and performance test a wide range of apps, servers, and protocols. This includes the following : Web - HTTP, HTTPS (Java, NodeJS, PHP, ASP.NET, …) SOAP (Simple Object Access Protocol)/ REST (Representational State Transfer) Web Services FTP (File Transfer Protocol) Database via JDBC (Java Database Connectivity) LDAP (Lightweight Directory Access Protocol) Message-oriented middleware (MOM) via JMS (Java Message Service) Mail - SMTP (Simple Mail Transfer Protocol)(S), POP3 (Post Office Protocol 3)(S) and IMAP (Internet Message Access Protocol)(S) Native commands or shell scripts TCP (Transmission Control Protocol) Java Objects Full-featured Test IDE for recording (from browsers or native applications), developing, and debugging Test Plans (A Test Plan is where you add elements that are needed for your JMeter Test.) To load-test from any Java-compatible OS (Linux, Windows, Mac OSX,...), use CLI mode (Command-line mode (formerly termed Non-GUI) / headless mode). It has the option to generate a dynamic HTML report that is full and ready to present. The ability to extract data from the most popular response formats, such as HTML, JSON, XML, or any textual format, allows for easy correlation. Complete portability and Java purity are guaranteed in Jmeter. Concurrent sampling by several threads and simultaneous sampling of distinct functions by separate thread groups are both possible with a full multithreading framework. It also has the option of test results caching and analysis/replaying offline. Extensible core: Pluggable Samplers offer limitless testing capabilities. With pluggable timers, you can choose from a variety of load statistics. Plugins for data analysis and visualisation offer a lot of flexibility and personalization. The employment of functions can be utilised to offer dynamic input to a test or to manipulate data. 3rd party Open Source libraries for Maven, Gradle, and Jenkins make Continuous Integration simple. 2. What is Distributed Testing? Distributed testing refers to the use of numerous machines for load testing (Load testing is the technique of simulating several users accessing a software at the same time in order to mimic the expected usage of the application), with one serving as the master and the others as slaves. It is critical to notice that all machines must be connected to the same network and run the same version of Java and JMeter. We'll utilise a local client as a master to manage the test execution for multiple remote clients, and each remote client will act as a slave to run the test on our target server. Each slave system runs the load tests according to the master's exact device specifications. As a result, distributed performance testing enables us to handle a greater number of concurrent users contacting the target server. 3. In JMeter, how do you set up a master-slave configuration? A master-slave configuration is a type of distributed testing in which multiple machines are used to load test a single server. It's critical that all machines are connected to the same network and have the same JMeter version. In distributed testing, one machine is designated as the master, while the others are designated as slaves.