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Software Quality Assurance (QA) Testing Interview Questions and Answers


This page contains the collection of Software Quality Assurance (QA) Testing Interview Questions and Answers / Frequently Asked Questions (FAQs) under category Testing. These questions are collected from various resources like informative websites, forums, blogs, discussion boards including MSDN and Wikipedia. These listed questions can surely help in preparing for Software Quality Assurance (QA) Testing interview or job.

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What is Depth Testing?
A test that exercises a feature of a product in full detail.

What is Dependency Testing?
Examines an application's requirements for pre-existing software, initial states and configuration in order to maintain proper functionality.

What is Metric?
A standard of measurement. Software metrics are the statistics describing the structure or content of a program. A metric should be a real objective measurement of something such as number of bugs per lines of code.

What is Monkey Testing?
Testing a system or an Application on the fly, i.e just few tests here and there to ensure the system or an application does not crash out.

What is Loop Testing?
A white box testing technique that exercises program loops.

What is Localization Testing?
This term refers to making software specifically designed for a specific locality.

What is Gorilla Testing?
Testing one particular module, functionality heavily.

What is Gray Box Testing?
A combination of Black Box and White Box testing methodologies? testing a piece of software against its specification but using some knowledge of its internal workings.

What is High Order Tests?
Black-box tests conducted once the software has been integrated.

What is Independent Test Group (ITG)?
A group of people whose primary responsibility is software testing,

What is Inspection?
A group review quality improvement process for written material. It consists of two aspects; product (document itself) improvement and process improvement (of both document production and inspection).

What is Integration Testing?
Testing of combined parts of an application to determine if they function together correctly. Usually performed after unit and functional testing. This type of testing is especially relevant to client/server and distributed systems.

What is Installation Testing?
Confirms that the application under test recovers from expected or unexpected events without loss of data or functionality. Events can include shortage of disk space, unexpected loss of communication, or power out conditions.

What is Quality System?
The organizational structure, responsibilities, procedures, processes, and resources for implementing quality management.

What is Quality Policy?
The overall intentions and direction of an organization as regards quality as formally expressed by top management.

What is Quality Management?
That aspect of the overall management function that determines and implements the quality policy.

What is Quality Control?
The operational techniques and the activities used to fulfill and verify requirements of quality.

What is Quality Circle?
A group of individuals with related interests that meet at regular intervals to consider problems or other matters related to the quality of outputs of a process and to the correction of problems or to the improvement of quality.

What is Quality Audit?
A systematic and independent examination to determine whether quality activities and related results comply with planned arrangements and whether these arrangements are implemented effectively and are suitable to achieve objectives.

What is Quality Assurance?
All those planned or systematic actions necessary to provide adequate confidence that a product or service is of the type and quality needed and expected by the customer.

What is Positive Testing?
Testing aimed at showing software works. Also known as "test to pass". See also Negative Testing.

What is Performance Testing?
Testing conducted to evaluate the compliance of a system or component with specified performance requirements. Often this is performed using an automated test tool to simulate large number of users. Also know as "Load Testing".

What is Path Testing?
Testing in which all paths in the program source code are tested at least once.

What is Negative Testing?
Testing aimed at showing software does not work. Also known as "test to fail". See also Positive Testing.

What is Static Analysis?
Analysis of a program carried out without executing the program. A tool that carries out static analysis.

What is Software Testing?
A set of activities conducted with the intent of finding errors in software.

What is Software Requirements Specification?
A deliverable that describes all data, functional and behavioral requirements, all constraints, and all validation requirements for software/

What is Soak Testing?
Running a system at high load for a prolonged period of time. For example, running several times more transactions in an entire day (or night) than would be expected in a busy day, to identify and performance problems that appear after a large number of transactions have been executed.

What is Smoke Testing?
A quick-and-dirty test that the major functions of a piece of software work. Originated in the hardware testing practice of turning on a new piece of hardware for the first time and considering it a success if it does not catch on fire.

What is Security Testing?
Testing which confirms that the program can restrict access to authorized personnel and that the authorized personnel can access the functions available to their security level.

What is Scalability Testing?
Performance testing focused on ensuring the application under test gracefully handles increases in work load.

What is Sanity Testing?
Brief test of major functional elements of a piece of software to determine if its basically operational. See also Smoke Testing.

What is Release Candidate?
A pre-release version, which contains the desired functionality of the final version, but which needs to be tested for bugs (which ideally should be removed before the final version is released).

What is Regression Testing?
Retesting a previously tested program following modification to ensure that faults have not been introduced or uncovered as a result of the changes made.

What is Recovery Testing?
Confirms that the program recovers from expected or unexpected events without loss of data or functionality. Events can include shortage of disk space, unexpected loss of communication, or power out conditions.

What is Ramp Testing?
Continuously raising an input signal until the system breaks down.

What is Race Condition?
A cause of concurrency problems. Multiple accesses to a shared resource, at least one of which is a write, with no mechanism used by either to moderate simultaneous access.

What is Test Plan?
A document describing the scope, approach, resources, and schedule of intended testing activities. It identifies test items, the features to be tested, the testing tasks, who will do each task, and any risks requiring contingency planning.

What is Test Harness?
A program or test tool used to execute a tests. Also known as a Test Driver.

What is Test First Design?
Test-first design is one of the mandatory practices of Extreme Programming (XP).It requires that programmers do not write any production code until they have first written a unit test.

What is Test Environment?
The hardware and software environment in which tests will be run, and any other software with which the software under test interacts when under test including stubs and test drivers.

What is Test Driver?
A program or test tool used to execute a tests. Also known as a Test Harness.

What is Test Case?
Test Case is a commonly used term for a specific test. This is usually the smallest unit of testing. A Test Case will consist of information such as requirements testing, test steps, verification steps, prerequisites, outputs, test environment, etc. A set of inputs, execution preconditions, and expected outcomes developed for a particular objective, such as to exercise a particular program path or to verify compliance with a specific requirement. Test Driven Development? Testing methodology associated with Agile Programming in which every chunk of code is covered by unit tests, which must all pass all the time, in an effort to eliminate unit-level and regression bugs during development. Practitioners of TDD write a lot of tests, i.e. an equal number of lines of test code to the size of the production code.

What is Test Bed?
An execution environment configured for testing. May consist of specific hardware, OS, network topology, configuration of the product under test, other application or system software, etc. The Test Plan for a project should enumerated the test beds(s) to be used.

What is Testing?
The process of exercising software to verify that it satisfies specified requirements and to detect errors. The process of analyzing a software item to detect the differences between existing and required conditions (that is, bugs), and to evaluate the features of the software item (Ref. IEEE Std 829). The process of operating a system or component under specified conditions, observing or recording the results, and making an evaluation of some aspect of the system or component. What is Test Automation? It is the same as Automated Testing.

What is Testability?
The degree to which a system or component facilitates the establishment of test criteria and the performance of tests to determine whether those criteria have been met.

What is System Testing?
Testing that attempts to discover defects that are properties of the entire system rather than of its individual components.

What is Structural Testing?
Testing based on an analysis of internal workings and structure of a piece of software. See also White Box Testing.

What is Stress Testing?
Testing conducted to evaluate a system or component at or beyond the limits of its specified requirements to determine the load under which it fails and how. Often this is performance testing using a very high level of simulated load.

What is Storage Testing?
Testing that verifies the program under test stores data files in the correct directories and that it reserves sufficient space to prevent unexpected termination resulting from lack of space. This is external storage as opposed to internal storage.

What is Static Testing?
Analysis of a program carried out without executing the program.

What is Static Analyzer?
A tool that carries out static analysis.

What is the difference between QA and testing?
QA is more a preventive thing, ensuring quality in the company and therefore the product rather than just testing the product for software bugs?
TESTING means 'quality control'
QUALITY CONTROL measures the quality of a product
QUALITY ASSURANCE measures the quality of processes used to create a quality product.

What is the difference between load and stress testing ?
One of the most common, but unfortunate misuse of terminology is treating “load testing” and “stress testing” as synonymous. The consequence of this ignorant semantic abuse is usually that the system is neither properly “load tested” nor subjected to a meaningful stress test.
Stress testing is subjecting a system to an unreasonable load while denying it the resources (e.g., RAM, disc, mips, interrupts, etc.) needed to process that load. The idea is to stress a system to the breaking point in order to find bugs that will make that break potentially harmful. The system is not expected to process the overload without adequate resources, but to behave (e.g., fail) in a decent manner (e.g., not corrupting or losing data). Bugs and failure modes discovered under stress testing may or may not be repaired depending on the application, the failure mode, consequences, etc. The load (incoming transaction stream) in stress testing is often deliberately distorted so as to force the system into resource depletion.

What is Workflow Testing?
Scripted end-to-end testing which duplicates specific workflows which are expected to be utilized by the end-user.

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