50 Questions for Performance Testing with JMeter in an Interview (With Sample Answers)
Preparing for an interview is an important part of the process and can help you make a good first impression. If you work in a field like information technology (IT) or software development, your employer may ask you questions about JMeter to see how well you know and can use skills and knowledge from that field.
If you know how to answer these questions, you can feel more confident when you answer them. In this article, we look at 50 JMeter performance testing interview questions and some sample answers to help you prepare for your next interview.
44 JMeter performance testing questions
Here is a list of 44 interview questions you might be asked about JMeter performance testing:
- What kind of programming language does JMeter use?
- Can you tell me about how JMeter is made?
- How does JMeter let you change the way data is set up?
- Do you know what JMeter correlation is most often used for?
- How many threads are the most you can have on a single system?
- What are the biggest differences between Poisson timers and Gaussian timers?
- Can you tell me how a JMeter can be used to record actions from mobile apps?
- How does a recorder for test scripts work?
- Why or why not do you think running JMeter in GUI mode is a good idea?
- How do you set up a master and a slave in JMeter?
- What do “regular expressions” in JMeter mean?
- Are test plans built with JMeter OS dependent or independent?
- What do thread groups and sampler groups mean?
- Can you tell me how JMeter runs the test elements?
- What is a test of fragments?
- What does it mean to have an element of configuration?
- What is the purpose of a JMeter timer?
- How do I do a spike test with JMeter?
- What is an assertion, and what are the different kinds?
- Can you tell me how to make JMeter use less of its resources?
- How do I get the script from the login window into JMeter?
- What does distributed load testing mean, and how do you do it?
- What does it mean to “process after”?
- What good things does JMeter bring to performance testing?
- What is stress testing, and why do you need to do it?
- What does a JMeter test plan include?
- What kinds of controllers are there?
- How do you make sure that JMeter scripts can be used more than once?
- Can you tell me what JMeter is and what it can do?
- What does “JMeter” stand for?
- In JMeter, how do you ask a server for something?
- What does a correlation mean, and how does it relate to JMeter?
- What does the ramp-up period mean?
- Can Selenium scripts be run in JMeter?
- What is a workbench used for?
- Which XML parser is used by JMeter?
- With JMeter, what file extension can be used for a JDBC driver?
- How many JMS samplers can you use in JMeter?
- Test with Apache JMeter? Do you know what that means?
- Need help writing JMeter code?
- Can.Net apps be tested with JMeter?
- How do you automate JMeter?
- Can APIs be tested with JMeter?
- What is a JTL file in JMeter?
Here are some sample answers to 6 interview questions about performance testing with JMeter.
Read these sample questions and answers to get ready for your next interview:
1.Why is it important to check how well JMeter works?
When an employer asks this, it’s usually because they want to know how you would explain why JMeter is important. It helps them figure out if you know some of the most important reasons why performance testing with JMeter is a good idea.
Example: “It’s important to use JMeter for performance testing because it lets you run a lot of tests to see how well client and server apps work. Testing how these programs work makes it easier to find problems and fix them quickly.” 2.Can you tell me about JMeter’s different types of processors?
This is a technical question that tests how well you understand processors and how they work with JMeter. This question usually asks for a description, not an explanation, so it is easy to study for and remember.
Example: “There are really only two kinds of processors in JMeter. The first one is called a preprocessor, and it runs before the main sampler. The second one is the postprocessor, which is run after the main sampler.”
2.Can you tell me about JMeter’s different types of processors?
This is a technical question that tests how well you understand processors and how they work with JMeter. This question usually asks for a description, not an explanation, so it is easy to study for and remember.
Example: “There are really only two kinds of processors in JMeter. The first one is called a preprocessor, and it runs before the main sampler. The second one is the postprocessor, which is run after the main sampler.”
3.What are the biggest differences between LoadRunner and JMeter?
This is one of the many questions about your knowledge that a potential employer might ask to see how technical you are. Try to name at least two or three ways in which the performance testers are different.
Example: “LoadRunner is paid software, but anyone can use and change JMeter for free. The user interface for LoadRunner is also big, while the one for JMeter is simple and not as well thought out.”
4.What do you do with your listeners, and what are the different kinds?
Listeners are an important part of performance testing, so you need to be able to tell them apart and explain why they’re useful. There are many different kinds of listeners, so try to only name two or three of them to keep your answer simple.
Example: “Listeners are tools that save the results of the performance testing. You can store the results in a table, graph, report, or tree, among other things.”
5. Do you know how to handle cookies and sessions with JMeter?
This is a technical question that a possible employer might ask to see how well you can do these specific tasks. Answer this question honestly, because the employer may want you to take a test to show what you know.
Example: “With the help of configuration elements, cookies and sessions can be managed in JMeter. Some of these features, like the HTTP Cache Manager, let you delete all cookies and add your own.”
6.Can you tell me some of the most important things about JMeter?
Using JMeter can help you in a lot of important ways. Since there are so many features to choose from, try to focus your answer on two to four important features. This helps you keep your answer short while giving the employer enough information to understand it.
Example: “You can do a lot of important things with JMeter. First, because it is open-source software, anyone can use it for free. You can also use JMeter to test how well different kinds of web servers, like HTTPS, SOAP, and HTTP, handle loads.”
