Performance Testing – Questions they will ask you in an interview

Last updated on July 9th, 2018 at 07:06 pm

High level of reliability, scalability, and interoperability has to be maintained during the entire process of designing and testing, if we want to achieve a commercial success of a final product, or a software application. To maintain that level is the task for performance testers. 

If you apply for this job, you should count with an interview process that consists in several rounds.

In the initial stages, they will ask you some personal and behavioral questions (find the first group here, and the second group here), to get a good grasp of your personality, and to understand if you would fit in their working environment, and in the team that they already have in place. 

After these questions, you will have to deal with practical tasks and technical questions, as the recruiters will try to assess your readiness for the job, and your true knowledge of performance testing. You can see a list of common technical questions below.


Technical questions for your interview

  1. What features and characteristics are assessed while performance testing is done?
  2. What do you personally consider as a best tool to conduct performance tests? Why do you prefer it to other, competing solution?
  3. What does abbreviation MIPS means?
  4. Define reliability, scalability and interoperability as an attributes of a network of your choice. How would you measure each of these attributes?
  5. Are there any drawbacks when we speak about manual load testing?
  6. Can you explain hardware tuning in load testing, in a way that a baker, or a cashier will understand it?
  7. When do you personally think a new hardware components should be performance tested (in what phase of development) and why?
  8. How to identify a CPU bottleneck on the application?
  9. What things should you find out when looking into the standard deviation in load test results?
  10. Have you ever worked with LoadRunner? Describe us your experiences with this tool.
  11. Can you define the following performance testing terms in one sentence? Server time, HTTP status code, receive time, round trip time.
  12. Can you define the acceptable limits for Memory usage in load testing?
  13. Have you ever heard about performance tuning?
  14. Where do you see the future of performance testing?
  15. In the era of cloud computing, what attribute of software applications that are tested using load tests do you consider as the most important?


Prepare in advance for the behavioral questions

There is no way you can prepare for every possible technical question you may get in the interview.

These questions will vary from company to company, and unless you know your job, unless you understand performance testing, you will struggle with your answers to them. Contrariwise, if you know the job, you will manage to answer most technical questions.

The situation differs when we speak about personal and behavioral questions–the first two stages of the interview process.

These questions  are similar in every company, becasue all testers experience the same situations in their jobs, and in the interaction with their colleagues: conflicts with their colleagues, crisis of motivation, inability to explain technical terms to their colleagues from other departments such as sales or marketing, pressure, tight deadlines, etc.

Do you know how to talk about these things in an interview? Do you know how to convince the employer that your attitude is right, that they can count on you in difficult times?

If you would like to learn how to answer thirty common personal and behavioral questions–many of which you’ll have to handle in your performance testing job interview, have a look at our Interview Success Package.

Thank you for reading, we wish you good luck! InterviewPenguin.com – Your Best Job Interview Coach since 2011

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