Top 50 Software Testing Interview Questions You Must Prepare 24.Jun.2024

Q1. Consider The Following Techniques. Which Are Static And Which Are Dynamic Techniques?

  1. Equivalence Partitioning.
  2. Use Case Testing.
  3. Data Flow Analysis.
  4. Exploratory Testing.
  5. Decision Testing.
  6. Inspections.

Data Flow Analysis and Inspections are static; Equivalence Partitioning, Use Case Testing, Exploratory Testing and Decision Testing are dynamic.

Q2. Which Of The Following Defines The Expected Results Of A Test? Test Case Specification Or Test Design Specification.

Test case specification defines the expected results of a test.

Q3. What Is A V-model?

A software development model that illustrates how testing activities integrate with software development phases.

Q4. Why Are Static Testing And Dynamic Testing Described As Complementary?

Because they share the aim of identifying defects but differ in the types of defect they find.

Q5. What Studies Data Flow Analysis?

The use of data on paths through the code.

Q6. During Which Test Activity Could Faults Be Found Most Cost Effectively?

During test planning

Q7. Why Can Be Tester Dependent On Configuration Management?

Because configuration management assures that we know the exact version of the testware and the test object.

Q8. What Is The Main Benefit Of Designing Tests Early In The Life Cycle?

It helps prevent defects from being introduced into the code.

Q9. To Test A Function, What Has To Write A Programmer, Which Calls The Function To Be Tested And Passes It Test Data.?


Q10. A Type Of Integration Testing In Which Software Elements, Hardware Elements, Or Both Are Combined All At Once Into A Component Or An Overall System, Rather Than In Stages.?

Big-Bang Testing

Q11. What Is Maintenance Testing?

Triggered by modifications, migration or retirement of existing software.

Q12. What Is Traceability Matrix?

The relationship between test cases and requirements is shown with the help of a document. This document is known as traceability matrix.

Q13. What Is The Difference Between Stlc (software Testing Life Cycle) And Sdlc (software Development Life Cycle) ?

SDLC deals with developement/coding of the software while STLC deales with validation and verification of the software.

Q14. Faults Found Should Be Originally Documented By Whom?

By testers.

Q15. What Are Different Test Levels?

There are four test levels:

  1. Unit/component/program/module testing
  2. Integration testing
  3. System testing
  4. Acceptance testing

Q16. What Is Beta Testing?

Testing performed by potential customers at their own locations.

Q17. When Should Testing Be Stopped?

It depends on the risks for the system being tested. There are some criteria bases on which you can stop testing.

  1. Deadlines (Testing, Release)
  2. Test budget has been depleted
  3. Bug rate fall below certain level
  4. Test cases completed with certain percentage passed
  5. Alpha or beta periods for testing ends
  6. Coverage of code, functionality or requirements are met to a specified point.

Q18. A Wholesaler Sells Printer Cartridges. The Minimum Order Quantity Is

4, 5, 99

Q19. Repeated Testing Of An Already Tested Program, After Modification, To Discover Any Defects Introduced Or Uncovered As A Result Of The Changes In The Software Being Tested Or In Another Related Or Unre

Regression Testing

Q20. What Are Semi-random Test Cases?

Semi-random test cases are nothing but when we perform random test cases and do equivalence partitioning to those test cases, it removes redundant test cases, thus giving us semi-random test cases.

Q21. What Are The Benefits Of Independent Testing?

Independent testers are unbiased and identify different defects at the same time.

Q22. What Are The Tables In Testplans?

Test design, scope, test strategies , approach are various details that Test plan document consists of:

  1. Test case identifier
  2. Scope
  3. Features to be tested
  4. Features not to be tested
  5. Test strategy & Test approach
  6. Test deliverables
  7. Responsibilities
  8. Staffing and training
  9. Risk and Contingencies

Q23. What Is Exploratory Testing?

Exploratory testing is a hands-on approach in which testers are involved in minimum planning and maximum test execution. The planning involves the creation of a test charter, a short declaration of the scope of a short (1 to 2 hour) time-boxed test effort, the objectives and possible approaches to be used. The test design and test execution activities are performed in parallel typically without formally documenting the test conditions, test cases or test scripts. This does not mean that other, more formal testing techniques will not be used.

For example: the tester may decide to use boundary value analysis but will think through and test the most important boundary values without necessarily writing them down. Some notes will be written during the exploratory-testing session, so that a report can be produced afterwards.

Q24. What Is Risk-based Testing?

Risk-based Testing is the term used for an approach to creating a test strategy that is based on prioritizing tests by risk. The basis of the approach is a detailed risk analysis and prioritizing of risks by risk level. Tests to address each risk are then specified, starting with the highest risk first.

Q25. Explain What Is Test Deliverables?

Test Deliverables are set of documents, tools and other components that has to be developed and maintained in support of testing.

There are different test deliverables at every phase of the software development lifecycle:

  1. Before Testing
  2. During Testing
  3. After the Testing

Q26. What Is Equivalence Partitioning Testing?

Equivalence partitioning testing is a software testing technique which divides the application input test data into each partition at least once of equivalent data from which test cases can be derived.  By this testing method it reduces the time required for software testing.

Q27. When Is Used Decision Table Testing?

Decision table testing is used for testing systems for which the specification takes the form of rules or cause-effect combinations. In a decision table the inputs are listed in a column, with the outputs in the same column but below the inputs. The remainder of the table explores combinations of inputs to define the outputs produced.

Q28. An Input Field Takes The Year Of Birth Between 1900 And 2004 What Are The Boundary Values For Testing This Field?


Q29. Testing Where In We Subject The Target Of The Test , To Varying Workloads To Measure And Evaluate The Performance Behaviours And Ability Of The Target And Of The Test To Continue To Function Properly

Load Testing

Q30. During The Testing Of A Module Tester 'x' Finds A Bug And Assigned It To Developer. But Developer Rejects The Same, Saying That It's Not A Bug. What 'x' Should Do?

Send to the detailed information of the bug encountered and check the reproducibility.

Q31. What Are The Different Methodologies In Agile Development Model?

There are currently seven different agile methodologies that I am aware of:

  1. Extreme Programming (XP)
  2. Scrum
  3. Lean Software Development
  4. Feature-Driven Development
  5. Agile Unified Process
  6. Crystal
  7. Dynamic Systems Development Model (DSDM)

Q32. Why Is Incremental Integration Preferred Over "big Bang" Integration?

Because incremental integration has better early defects screening and isolation ability.

Q33. What Is The Purpose Of A Test Completion Criterion?

The purpose of test completion criterion is to determine when to stop testing.

Q34. How Would You Estimate The Amount Of Re-testing Likely To Be Required?

Metrics from previous similar projects and discussions with the development team.

Q35. What Is Component Testing?

Component testing, also known as unit, module and program testing, searches for defects in, and verifies the functioning of software (e.g. modules, programs, objects, classes, etc.) that are separately testable. Component testing may be done in isolation from the rest of the system depending on the context of the development life cycle and the system. Most often stubs and drivers are used to replace the missing software and simulate the interface between the software components in a simple manner. A stub is called from the software component to be tested; a driver calls a component to be tested.

Q36. What Is The Main Objective When Reviewing A Software Deliverable?

To identify defects in any software work product.

Q37. Mention The Difference Between Data Driven Testing And Retesting?

Retesting:  It is a process of checking bugs that are actioned by development team to verify that they are actually fixed.

Data Driven Testing (DDT):  In data driven testing process, application is tested with multiple test data. Application is tested with different set of values.

Q38. Who Is Responsible For Document All The Issues, Problems And Open Point That Were Identified During The Review Meeting?


Q39. What Is Mutation Testing?

Mutation testing is a technique to identify if a set of test data or test case is useful by intentionally introducing various code changes (bugs) and retesting with original test data/ cases to determine if the bugs are detected.

Q40. What Is The Main Purpose Of Informal Review?

Inexpensive way to get some benefit.

Q41. What Are The Phases Of A Formal Review?

In contrast to informal reviews, formal reviews follow a formal process. A typical formal review process consists of six main steps:

  1. Planning
  2. Kick-off
  3. Preparation
  4. Review meeting
  5. Rework
  6. Follow-up.

Q42. What Is A Failure?

Failure is a departure from specified behaviour.

Q43. What Is Functional System Testing?

Testing the end to end functionality of the system as a whole is defined as a functional system testing.

Q44. What Is The Role Of Moderator In Review Process?

The moderator (or review leader) leads the review process. He or she determines, in co-operation with the author, the type of review, approach and the composition of the review team. The moderator performs the entry check and the follow-up on the rework, in order to control the quality of the input and output of the review process. The moderator also schedules the meeting, disseminates documents before the meeting, coaches other team members, paces the meeting, leads possible discussions and stores the data that is collected.

Q45. What Is The Function Of Software Testing Tool "phantom"?

Phantom is a freeware, and is used for windows GUI automation scripting language.  It allows to take control of windows and functions automatically.  It can simulate any combination of key strokes and mouse clicks as well as menus, lists and more.

Q46. As Part Of Which Test Process Do You Determine The Exit Criteria?

The exit criteria is determined on the bases of 'Test Planning'.

Q47. Given The Following Fragment Of Code, How Many Tests Are Required For 100% Decision Coverage?
If Width > Length
Thenbiggest_dimension = Width
If Height > Width


Q48. Given The Following Code, Which Statement Is True About The Minimum Number Of Test Cases Required For Full Statement And Branch Coverage?
Read P
Read Q
If P+q> 100<

1 test for statement coverage, 2 for branch coverage

Q49. Which Of The Following Are Valid Objectives For Incident Reports?

  1. Provide developers and other parties with feedback about the problem to enable identification, isolation and correction as necessary.
  2. Provide ideas for test process improvement.
  3. Provide a vehicle for assessing tester competence.
  4. Provide testers with a means of tracking the quality of the system under test.

Q50. Which Review Is Normally Used To Evaluate A Product To Determine Its Suitability For Intended Use And To Identify Discrepancies?

Technical Review.