50+ Interview Questions on SDLC (Software Development Life Cycle)

50+ Interview Questions on SDLC (Software Development Life Cycle)



1) What is SDLC?

Software Life Cycle Model is a systematic approach to develop Software. 

2) What are the phases in Software Development Life Cycle?

Requirements Gathering
Analysis & Planning
Software Design
Coding or Implementation
Testing
Release & Maintenance
Note: Phase names may vary from one company to another 

3) What is STLC?

Software Testing Life Cycle or Software Test Process is a formal way to perform Testing.

4) What are the phases in Software Testing Life Cycle?

Test Planning
Test Design
Test Execution
Test Closure

5) What is Bug Life Cycle?


Bug Life Cycle is the Process through which a defect or bug goes starts when defect found & ends when defect is closed.

Different Flows in Bug Life Cycle

New: Tester provides new status while Reporting (for the first time)

Open: Developer / Dev lead /DTT opens the Defect

Rejected: Developer / Dev lead /DTT rejects if the defect is invalid or defect

Fixed: Developer provides fixed status after fixing the defect

Deferred: Developer provides this status due to time

Closed: Tester provides closed status after performing confirmation Testing

Re-open: Tester Re-opens the defect with valid reasons and proofs 

6) What is ALM (Application Lifecycle Management)?

Application Lifecycle Management (ALM) is a continuous process of managing the life of Software application through development, testing and maintenance.

7) What are the phases in Software Application Life Cycle?

Development phase
Testing phase
Production phase

8) What is Error?

Any mismatch in Computer programming, another name is Mistake.

9) What is Defect or Bug?

Any mismatch that found in testing phase

10) What is Failure?

Any mismatch that found in production phase (Customer environment)

11) What is Waterfall Model?

The waterfall model is a sequential software development approach,  in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of Requirements Gathering, Analysis and Planning, Software Design, Coding or Implementation, Testing and Release & Maintenance.  

12) What is V Model?

A framework, It describes the software development lifecycle activities from
requirements specification to Release & maintenance. 


The V-model illustrates how testing activities can be integrated into each phase of the software development lifecycle.

13) What is Prototype Model?

14) What is Spiral Model?

15) What is Agile Model?

16) What is Quality?

The degree to which a component, system or process meets specified requirements and/or user/customer needs and expectations. 

17) What is Software Quality?

18) What is SQA (Software Quality Assurance)?

19) What is Quality Control?

20) What is Verification?

21) What is Validation?

22) What is Testing?

23) What is the relation between Quality and Testing?

24) What are the advantages of Waterfall Model?

25) What are the disadvantages of Waterfall Model?

26) What are the advantages of V Model?

27) What are the disadvantages of V Model?

28) What are the advantages of Prototype model?

29) What are the disadvantages of Prototype model?

30) What are the advantages of Agile model?

31) What are the disadvantages of Agile model?

32) What is Requirement?

33) What is Requirement Specification?

34) What is BRS?

35) What is SRS?

36) What is High Level Design or Global Design?

37) What is Detailed Design or Low Level Design?

38) What are the important types of Requirements?

39) What is Business Requirement?

40) What is Software Requirement?

41) What is Test Requirement?

42) What is Software Release?

43) What is Software Maintenance?

44) What is Change Request?

45) What is PIN Document and who prepares this document?

46) What are the teams involved in Software Development?

47) What is Static Testing?

48) What is Dynamic Testing?

49) Why we use Test Design Techniques?


Exhaustive testing is impractical so we use Test Design Techniques in order to reduce the sizes of input and output domains. 

50) What is Exhaustive Testing?

A test approach in which the test suite comprises all combinations of
input values and preconditions.

51) What is Quality Management?

Coordinated activities to direct and control an organization with regard
to quality. 


Direction and control with regard to quality generally includes the establishment of the quality policy and quality objectives, quality planning, quality control, quality assurance and quality improvement.

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