performance testing interview questions: 60 Performance Testing Interview Questions To Practice

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  1. Oates
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    2023-04-29T19:01:20+00:00
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    Performance testing is a broad term that involves testing the performance of applications, systems, networks and other products in order to ensure they meet their requirements. It can be done manually or automatically. Because performance testing is very important in software development, here are some questions that you can ask yourself while preparing for a performance tester interview:

    What is performance testing?

    Performance testing is a form of software testing that measures and compares the performance of software under test against a set of predefined criteria. Performance testing is used to ensure that the system meets its performance requirements, identify any performance regressions, as well as provide detailed information about where bottlenecks exist within the application.

    How is performance testing different from load testing and stress testing?

    Performance testing is different from load and stress testing. Performance testing is used to determine if the application will perform as expected under load, whereas load and stress tests are used to determine if the application will perform as expected under load.

    Performance tests simulate real-world conditions by simulating large numbers of users or other external factors that may affect your system’s performance. For example: You want to see how long it takes for your site’s pages to load when you have 100 visitors at once; this would be considered a performance test because you’re trying to see how much strain these 100 people will put on your servers (and whether they crash).

    How do you identify performance issues?

    Identifying performance issues can be a daunting task, but it’s important to know how to do it. When you’re faced with an issue and don’t know where or how to begin, here are some questions you can ask yourself:

    • What is the problem?
    • Where did it occur?
    • Why did this happen? (Root cause)

    It’s also important that you understand how your solution works so that when testing against performance requirements or goals, you have something concrete for comparison purposes.

    What are the three key characteristics of a good tester?

    A good performance tester has the ability to think like a user, developer and manager.

    • Thinking like users: A performance tester should be able to understand how users will use their application or website. They should be able to ask questions that give insight into what users need from an application or website and how they would use it in real life situations.
    • Thinking like developers: A good performance tester knows how applications are built and can identify where bottlenecks may occur when building new features which leads us onto our next point…
    • Thinking like managers: A good performance tester knows how budgets work in companies so that they can help manage projects within budget constraints while still delivering value for money. If a company wants X feature but doesn’t have enough money then maybe Y feature could be cut instead? This way everyone wins!

    What is your definition of a bug?

    A bug is a problem that causes the software to behave in an unexpected or unintended manner. Bugs can be caused by a variety of factors, including human error and programming errors.

    Bugs can be introduced at any stage of the software development process: during requirements analysis; design; coding; testing; integration; deployment; maintenance and support (post-release).

    How would you test something such as spam detection and filtering in an email application?

    • In a normal environment, you would use your email application as you normally do.
    • In a degraded environment, you would use your email application with some of its features disabled or removed. For example: You may want to disable the ability for users to send attachments, or disable the ability for users to forward emails from one account into another account.
    • In an abnormal environment, you would introduce some abnormal situations into how people use their email application and see if those actions are detected by its spam detection system (like whether someone sends an attachment when they shouldn’t be allowed). For example: If there was no way for users who had been flagged as spammers before through previous tests could ever regain access again then that would definitely qualify as an “abnormal situation” worth testing against!

    What’s the difference between error rate, failure rate, and defect density?

    • Error rate is the percentage of defects found in a test.
    • Failure rate is the number of defects found in a test divided by the number of tests run.
    • Defect density is the number of defects per line of code (LOC).

    Where do you see mobile app performance testing going in the next 12 months? 24 months? 30 months? 100 years from now?

    As you’re probably aware, the future of performance testing is going to be more automated. The future of performance testing will be more integrated into the development process, and that means that teams will have an easier time finding bugs and fixing them before they get released.

    The future of performance testing also means that it will become part of your organization’s culture–you won’t just use it when there’s something wrong or when someone asks you to test something; instead, everyone will understand how important it is to make sure their code works well before they deploy anything new.

    Takeaway:

    Performance testing is an important part of quality control. It’s used to ensure that a system or application meets its performance goals, and it can be performed on a single process or across multiple processes.

    Performance testers work with other members of the development team to determine how well an application performs under different conditions, such as high-traffic volume or heavy usage by users. They use tools like load simulators to generate simulated loads on their software so they can see how it will respond under various circumstances before releasing it into production environments where real users will access it.

    In addition to ensuring that applications function properly in these conditions, performance testers may also be responsible for making sure that developers are writing code that follows best practices when developing new features–for instance, following standards set forth by industry groups like IETF (Internet Engineering Task Force) when creating web pages using HTML5 markup languages like JavaScript/ECMAScript 6

    The key to passing your performance testing interview is to be prepared. You need to know the basics of what performance testing is, how it differs from load testing and stress testing, what three characteristics make up a good tester and how they work together as well as some basic definitions like bug or defect density. You should also be able to discuss where mobile app performance testing will go in the next 12 months 24 months 30 months 100 years from now

  2. Academic Content Writer
    0
    2023-04-30T14:01:37+00:00
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    performance testing interview questions: 60 Performance Testing Interview Questions To Practice

    Introduction

    Performance testing is a specialized skill that requires knowledge of many different disciplines. It’s crucial to know how to effectively handle the load on your site, and it takes years of experience to get good at it. However, if you want to become an expert in performance testing interviews, there are some basic questions all interviewers ask:

    What do you consider to be the most important skills for a tester to have?

    The most important skills for a tester to have are the ability to think independently, work in a team, learn quickly and solve problems. They should also be able to communicate effectively and be creative.

    If you’re interviewing for a performance testing position then there’s no doubt that these are skills that will help you succeed in your career as well!

    How do you define performance testing?

    Performance testing is a type of software testing that is performed to evaluate the performance of a system or application. It can be used to determine how well an application will perform under load, and also to identify bottlenecks in your code.

    Performance testing has two main goals:

    • To verify that your new feature works as expected
    • To see if it performs as you expect it to

    What is your biggest success as a performance tester?

    • What is your biggest success as a performance tester?
    • What was the problem you solved?
    • What team did you work with?
    • What results did you achieve?
    • How did the business benefit from that success?

    What lessons did you learn from this experience, both personally and professionally?

    What are the most important parts of a performance test plan?

    The performance test plan should contain the following:

    • Scope, goals and objectives
    • Test plan template
    • Test environment (operating system, hardware platform, database software and version)
    • Test data (source file name, number of records)

    You can also add things like:

    • User actions or scenarios to be tested.

    What are the main challenges in performing load tests on a particular type of application?

    The most important part of a performance test plan is the steps that you will follow to conduct the tests. You should also include information about how long it will take to complete each step, as well as any assumptions or limitations that might affect your findings.

    The main challenges in performing load tests on a particular type of application can vary depending on what kind of software is being tested. For example, if you’re testing an e-commerce site with many different pages and features available for users to browse through, then it may be difficult for you because there are so many pages with different elements within them (such as pictures). This means that when trying out various things like adding items into their shopping carts or going through checkouts they could end up causing problems somewhere else on another page which hasn’t been tested yet!

    How do you collect load data from multiple servers to determine the load time of a web page on each server in order to achieve a holistic view of how well the server is performing under load?

    The first step is to collect load data from multiple servers to determine the load time of a web page on each server in order to achieve a holistic view of how well the server is performing under load. This can be done using tools such as JMeter, LoadRunner and NewRelic.

    Once you have collected enough data, it’s time to analyze it and identify bottlenecks. This can be done using tools like Selenium WebDriver or Gatling

    Can you explain what is a user story and how does it relate to your work as a performance tester?

    A user story is a short description of a feature. It’s written in the form “As , I want so that . For example, “As an end user, I want to be able to search for restaurants nearby so that I can find one quickly.”

    User stories are used to describe requirements for features and are part of agile software development methodologies such as Scrum or Kanban. They are usually written on index cards which are organized into columns: who (the role), what (the functionality), why (the benefit), how much effort required (story points).

    How do you measure success in performance testing? For example, what metrics would you look at when testing an e-commerce site with millions of users where there are thousands of transactions per second and hundreds of concurrent users on each page?

    Performance testing is a measure of success. It’s a way to ensure that your software is performing as expected, or better than expected.

    Performance metrics are used in order to determine whether or not an application is meeting its requirements. For example, if you have an e-commerce site with millions of users and thousands of transactions per second, then you can use performance metrics as an indicator for quality assurance purposes. Performance testing will allow you to determine whether or not your system can handle these high volumes without slowing down or crashing under load conditions.

    You can get better at performance testing by practicing with these questions.

    These questions are designed to help you learn more about performance testing and prepare for an interview.

    If you’re looking for a job as a performance tester, these questions will be useful in helping you prepare for an interview. They can also be used on your own time as an exercise in learning about the field of performance testing–and even if you’re not applying for any jobs right now, it never hurts to keep learning!

    Conclusion

    We hope that these questions have helped you to prepare for your next performance testing interview. If you’re looking for more practice, we’ve got some great resources on our blog that will help with this as well!

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