Software Testing Interview Question

Top 10 Essential Software Testing Interview Questions

Are you searching for software testing interview questions?  The team at GoApti has prepared a list of 10 you are likely to be quizzed on. This post will strengthen your software testing concepts and understanding.

Software testing is an investigation conducted to provide stakeholders with information about the quality of the software product or service under test. Software testing can also provide an objective, an independent view of the software to allow the business to appreciate and understand the risks of software implementation.

Test techniques include the process of executing a program or application with the intent of finding software bugs (errors or other defects) and verifying that the software product is fit for use.

Software testing involves the execution of a software component or a system component to evaluate one or more properties of interest. In general, these properties indicate the extent to which the component or system under test:

  • Meets the requirements that guided its design and development.
  • Responds correctly to all kinds of inputs.
  • Performs its functions within an acceptable time.
  • Is sufficiently usable.
  • Can be installed and run in its intended environments.
  • Achieves the general result of its stakeholder’s desire.

Source: Wikipedia

1. What are quality assurance and quality control in software testing?

Quality assurance comes in process-oriented activities. It is used to ensure the prevention of defects in the process or methodology used to make software applications. 

Quality control comes in product-oriented activities. It executes the script logic to identify the defects and the bugs in the software application.

2. What is the meaning of audit, inspection, and debugging in software testing?

  • Audit − Audit is a well-planned systematic process to determine the testing process conducted within an organization. Auditing is independent of the processes involved during the testing of software in the company.  It is a review of documented processes used. Some types of audit are Internal Audit, Legal Compliance Audit, and System Audit.
  • Inspection – Introspection is a formal evaluation technique in which software requirements codes and designs are examined in more detail by a person or a group (not the developer of the software) to detect defects, violations of development standards, or any other problem. It is a way to perform a formal or an informal technical review of any developed artifact by identifying defects or gaps.
  • Debugging – Debugging is done to find out the root cause of the bug. It is performed by a software developer. An IDE is used to perform the debugging; the developer runs the software in debugging mode within the IDE and reviews the code line by line to find out the exact root cause of the bug

3. What is white box testing? How many types of white box testing are there, and what are the steps involved in white box testing?

In White box testing, test cases are selected based on an analysis of the internal structure of the system and its subcomponents. They include code coverage, paths coverage, condition coverage branches coverage, etc. There are 7 types of white box testing:

  • Unit testing.
  • Static analysis.
  • Dynamic analysis.
  • Statement coverage.
  • Branch testing coverage.
  • Mutation testing.
  • Statement coverage.

   The steps involved in white box testing are:

  • Verify the flow of the system and its components’ structures according to the document specification.
  • Verify the broken paths in the code.
  • Verify the security holes in the code.
  • Verify the expected outputs.
  • Testing of conditional loops in the code.
  • The software is tested line by line to ensure 100% coverage of testing.

Must Read: Top 25 Most Popular Computer Science Interview Question and Answers

4. What is black box testing? What are the different black box testing techniques?

Software testing questions are considered incomplete without black box and white box testing. The functionality of the software application is tested in black-box testing. Black box testing is the software testing methodology in which software is tested without knowing how it is implemented, the code flow, the internal structure, and the code that has been written for a particular functionality. The different type of black box testing techniques are:

  • Equivalence partitioning.
  • Cause-effect graphing.
  • Boundary value analysis.

5. What are static and dynamic testing techniques?

Static testing: In static testing, the code execution is not performed. The testing is done using the documentation.

Dynamic testing: In dynamic testing, the code is executed to perform the testing.

6. What information is present in a test plan?

The test plan document contains the following information: scope, test design, test strategies, and many other details. Some of them are:

  • Test strategy and test approach.
  • Test case identifier.
  • Features to be tested.
  • Test deliverables.
  • Scope.
  • Risk and Contingencies.
  • Staffing and training.
  • Features not to be tested.
  • Responsibilities.

7. What is the difference between system testing and user acceptance testing?

System Testing: In this type of testing, the software application undergoes testing from the start stage until the end. System testing is a way to find the defects when the system undergoes testing by including all the components at the same time. For the same reason, it is also known as end-to-end testing.

User Acceptance Testing: It involves running an application software according to a sequence of specific test cases. The output determines whether the software will meet the needs of the users’ requirements.

8. What is the difference between test cases, test scenarios, and test script?

Test Case: A test case is a document that contains the steps to be executed. It is planned early on.

Test Scenarios: Test scenarios are prepared in an early stage of the software testing; they include information such as the plans for the testing product, environmental conditions, team members, making test plans, making test cases, and all the features that are to be tested for the application.

Test Script: A test script is written in a programming language. It’s a short program used to test some functionality of the software system.

9. What is a testing type?

A standard procedure and steps are followed to get the desired testing results. That procedure and the accompanying steps constitute a testing type.

Some commonly used testing types are:

  • Agile Testing: It is a way of testing using the Agile technique.
  • API Testing: Different testing APIs created for the application.
  • Unit Testing: It is the testing of a small block of the code of an application.
  • Install/ Uninstall Testing: Testing done from the point of end-users’  requirement.
  • Integration Testing: All of the modules are combined and then tested.
  • System Testing: It is the end-to-end testing of the system.

10. What is the difference between the traceability matrix and the test matrix?

  • Traceability Matrix: The traceability matrix is the mapping between customer requirements and test cases. It is also known as coverage matrix.
  • Test Matrix: A test matrix is used to capture the actual quality, the effort, the plan, the resources, and the time required to complete all of the phases of software testing.

What are some software testing questions essential for preparation? What are the key responsibilities in software testing jobs? Want to share your experience of clearing some software testing certification? Do comment.

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