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Testing Interview Questions

Testing interview questions include questions on basic concepts of software testing, software processes, automated and manual testing, and testing estimation as well as techniques. A list is provided here that contains the most commonly asked questions in most of the positions in the field of testing. You would come to know what exactly to expect from the interviewer and the tips given with each question can help you prepare better for your next interview.

You just need to remember some basic things that you should be prepared very well in manual testing technique and methodologies, and you should be able to explain which type or techniques of testing would be applicable for which stage of SDLC. Even if you know all the testing concepts clearly, then half your work is done. Just refer to the following list of questions and their best suitable answers to accomplish the rest half work. Here are the sample questions:

Question 1: Explain what is testing?

Testing is the procedure that involves verification of the software to check whether it fulfills your specific requirements. If not, the errors are detected through testing. Testing is technically defined as the process of analysis of a software item for detection of the distinctions between the existing conditions and required conditions, and thereby evaluation of the features of that software item. Testing follows certain procedure: Operation of the system under specified conditions, recording of the results, evaluation of the system.

Question 2: What is test bed?

Test bed is the environment especially configured for the testing procedure. A test bed consists of a hardware, network topology, operating system, configuration of the product to be tested, and any other applications. The test bed to be used is enumerated by the test plan for a project.

Question 3: What is test case?

This is a commonly used terminology in testing. It represents the smallest unit of testing. A typical test case comprises of information such as testing requirements, prerequisites, steps of testing, steps of verification, test environment, and outputs. Provision of a set of inputs, desired outputs, and preconditions for the purpose of execution is offered before starting up the testing procedure.

Question 4: Tell me the differences between white box, black box, and gray box testing.

This is one of the most common questions that you will come across. Your answer should be to the point and precise.

  • Black box testing a testing strategy that is purely based on the requirement and specification. This type of testing does not require thorough knowledge of internal paths, their structures, and the actual implementation of the software that is being tested
  • White box testing - a testing strategy that is purely based on the internal paths, code structures, and the actual implementation of the software that is being tested. You have to have detailed programming skills for performing white box testing
  • Gray box testing this testing procedure involves looking into the box that is being tested just to understand how it has been implemented. After that the box is closed and the knowledge about black box testing is used for testing which proves to be more useful

Question 5: What are SDLC and STLC? Tell me the phases of both.

SDLC stands for software life cycle model and it is a systematic software developing approach. There are eight phases of SDLC: requirement gathering, analysis, planning, software designing, implementation, testing, release, and maintenance. STLC stands for software testing life cycle which is a formal testing procedure. It has four phases: planning, designing, executing, and closing.

Question 6: Explain Ad Hoc Testing?

Ad Hoc testing is a terminology that is commonly used for software testing performed without any clear planning and documentation. If a defect is not found, the test is run only once. This type of testing is the least formally used testing methodology. Since it is not structured and the test cases are not written, the defects found in this testing are difficult to be reproduced. The best advantage of this Ad Hoc testing is that it finds out major defects quickly.

Question 7: Explain the term usability testing.

When the end user is asked to use the software to check the usability of the product, how is the perception of the customer, and what is the task time. Generally, mock-up software or prototype is used in the primary stages of testing are used so as to finalize the customer's point of view. Considering the user's point of view, the last task before handing over the prototype to the customer is to check that we are not missing anything important.

Question 8: What is the good situation for system testing?

The best time for system testing is when the released build by the developers is perfectly stable to perform the whole testing process.

Question 9: What are the steps to implement a testing policy?

There are There are some important steps to implement the testing policy:

  • To define the testing policy
  • To determine how to achieve
  • To evaluate
  • To achieve standards

Question 10: What according to you are the key challenges to testing?

There are certain challenges that we have to overcome during the testing procedure. The requirements are not constant, every application is not testable, there may be a defect in the defect tracking system itself, there could be lack of communication or miscommunication or bugs found in software development tools, restricted time constraints, and defect in the system are the usual ones.

These are top ones among the most frequent testing interview questions. Apart from preparing for these questions, you can also jot down similar questions on your own and try preparing for every topic thoroughly. You should be able to demonstrate your skill sets in basic databases, SQL concepts, basic scripting languages for automation testing, concepts in networking, and basics of system administration. Your answers should convince the interviewer that you are the one who will definitely face any challenges as a tester and accomplish the given tasks. If these points are taken care of, then landing a good job in the testing field is not very difficult.

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