Acing an interview and impressing the recruiter is crucial to land a well-paying job offer, irrespective of your experience as a software tester. The software testing interview questions for experienced candidates and freshers are categorized into skill-based, domain-based, and scenario-based to help you stand out from the competition.
Skilled testers are a valuable part of every development team and are crucial to the project's success. Apart from the knowledge of various testing tools, you will need to demonstrate your analytical skills, communication skills, and willingness to learn during your interview. These software testing interview questions and answers will help you do just that.
Software testing jobs are well-paying, secure, and offer a significant level of job satisfaction. The role of QA Analyst was termed the second happiest job in the world. The average salary for a software tester is INR 3,35,000 per annum, and it can increase as you gain more work experience and move up the corporate ladder.
All that stands between you and the job is the interview. These software testing interview questions are a good way to prepare for the interview.
The software testing questions try to gauge if you are the right fit for the job depending on your knowledge of the domain, your skills, and how you respond in various scenarios.
Domain-based software testing interview questions try to understand how much you know about the various terms and tools used by the testers.
1) Explain the role of testing in the software development lifecycle and the software testing life cycle.
The role of software testing in the development lifecycle will vary depending on the methodology used for development.
In the Waterfall methodology, the testing stage is one of the final stages that precede the product release and maintenance. Once the developers finish the project implementation, the testers ensure that the final product meets the requirements.
The software testing lifecycle has the following stages.
2) How will you categorize the different types of testing?
The tests can be broadly classified as functional and non-functional testing.
Functional testing is used to test if the software works as expected. It is a form of black-box testing where you verify if the software works according to the requirements. Unit testing, integration testing, system testing, interface testing, regression testing, and user acceptance testing fall under functional testing.
Non-functional testing tests the attributes of the product, such as its performance, scalability, reliability, etc. It is used to ensure that the system can deliver various performance metrics specified by the client. Documentation testing, security testing, reliability testing, installation testing, and performance testing come under non-functional testing.
3) What is the difference between manual testing and automated testing?
|Manual Testing||Automated Testing|
|A tester inputs the test cases and verifies if the software is functioning as it should.||The tester uses an automated testing tool or software to write code that will feed the input and examine the output to determine if the software passed or not.|
|Manual tests are more prone to human error.||The test results are more reliable.|
|The time needed for tests is high.||Can perform various tests in a short period.|
|Manual testing can also test for customer experience in using the product.||Automated testing provides no information on the customer's ease of using the product.|
|Manual testing is ideal for exploratory, ad-hoc, and usability testing.||Automated testing is ideal for regression, load and performance testing, or any other tests requiring repetition.|
|Low investment and low ROI.||High investment and high ROI.|
4) Explain the bug or defect life cycle.
The cycle starts with the discovery of the bug. The bug is then assigned to a developer. The developer can reject the bug if it is not valid. If it is a valid bug, the developer will fix the bug and send it for testing.
If the code passes the test, it will need to be verified once again, and the bug is closed. However, if the code fails the test, it goes back into the Active state where the developer is trying to fix it.
5) What is the difference between integration testing and system testing?
|Integration Testing||System Testing|
|Integration testing is performed to ensure that all the different modules can work together without any errors.||System testing is performed to ensure that the whole system meets the customer's requirements.|
|Only functional testing.||Involves both functional and non-functional testing.|
|Integration testing is carried out after unit testing.||The system test is a high-level test and is usually carried out after integration testing.|
|It involves both black box and white box testing.||It only needs black box testing.|
The skill-based software testing interview questions and answers are designed to test if you have good analytical, communication, and time management skills in addition to strong technical skills.
6) How will you classify the bugs based on their severity?
Bugs can belong to any of the three categories.
7) What are the best practices one should follow while writing test cases?
Here are some of the best practices you should follow while writing test cases.
8) What is Boundary Value Analysis? Why is it important?
Boundary Value Analysis or BVA is a testing technique where you test the system's behaviour at the boundary conditions. There is a higher chance of a defect near the boundary in most cases rather than within the specified range.
When the values are included in the specified range, the testing can also be called positive testing. When the values lie outside the range, the testing is called negative testing.
9) What are the different HTTP status codes that a server can return?
The response codes are three-digit numbers varying from 100 to 599.
10) Which test case should you write first? Black box or white box?
You should write the black-box test cases first, as you do not need intimate knowledge of the system architecture to write these test cases. A deeper knowledge of the product and its architecture is required for writing the white box test cases.
The information needed for writing the white box test cases is not usually available at the start of the project. In contrast, the information for writing the black-box test cases is readily available from the start.
The scenario-based software testing interview questions present some of the common challenging scenarios that a software tester will face. These software testing questions are designed to help the recruiter understand how you will react to these scenarios.
11) You have to test an application whose requirements have not been frozen. How will you perform this test?
Ideally, the requirements should be frozen before the development and the testing take place. But sadly, this is not the case in the real world. In such cases, here is what you can do.
12) Is it possible to perform exhaustive testing? Why? How will you know when to stop testing?
It is impossible to perform exhaustive testing. You will have to test all the values that every input can take. It will be extremely resource-heavy and time-consuming. Creating test cases where you are more likely to find errors is the better strategy.
With complex systems with too many interdependencies, you might find it hard to determine when to stop testing. In such cases, you must stop testing when a certain percentage of the test cases result in a pass or when you have reached a particular level of code coverage, or if the bug rate falls below a certain level.
Deadlines and test budgets are other factors that can impact the decision of stopping testing.
13) You have to test a website. What are the different scenarios you will use?
Here are a few scenarios to consider while testing websites.
14) You have to choose between automation testing and manual testing. How will you decide?
You should use automated testing in the following scenarios:
Manual testing is the best choice for usability testing, ad-hoc, and exploratory testing.
15) Why can't the developers test the code themselves? Why is the role of software tester important?
When the developer tests the code, they are more likely to only run tests where the code passes. The optimism and personal connection with the code prevent the developer from creating test cases and will truly test the system's limits and cause it to break. A software tester is experienced in writing test cases that are designed to break the system.
With this, we wrap up the most important software testing interview questions you're likely to face during an interview. The answers give you all the information you need to land the job. Good luck!
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