Discover the correct order of SDLC phases to ace your Software Testing Tutorial Certification Exam. Learn the structured process of software development and its key stages.
Table of Contents
Question
Which of the following option is the correct order of SDLC?
A. Requirements, Designing, Maintenance, Coding, Testing
B. Designing, Requirements, Coding, Testing, Maintenance
C. Coding, designing, testing, Maintenance, Requirements
D. Requirements, Designing, Coding, Testing, Maintenance
Answer
D. Requirements, Designing, Coding, Testing, Maintenance
Explanation
The Software Development Life Cycle (SDLC) is a structured process that ensures high-quality software development by breaking it into distinct phases. The correct sequence of SDLC phases is as follows:
Requirements Gathering and Analysis
- This is the first and most critical phase.
- Business analysts and stakeholders collaborate to define the project’s objectives, scope, and requirements.
- The output is a Software Requirement Specification (SRS) document that serves as a blueprint for the next phases.
Designing
- Based on the SRS, architects and developers create system designs.
- This includes high-level design (HLD) for architecture and low-level design (LLD) for detailed components.
- The goal is to outline how the software will function and look.
Coding/Implementation
- Developers write code to implement the designs using appropriate programming languages.
- This phase translates the design into a working software product.
Testing
- The developed software undergoes rigorous testing to identify and fix bugs.
- Types of testing include unit testing, integration testing, system testing, and user acceptance testing (UAT).
- Ensures the software meets quality standards and requirements.
Maintenance
- After deployment, the software enters the maintenance phase.
- This involves fixing post-release bugs, updating features, and adapting to new requirements or environments1.
Why Other Options Are Incorrect
Option A (Requirements, Designing, Maintenance, Coding, Testing): Maintenance cannot occur before coding or testing; it happens after deployment.
Option B (Designing, Requirements, Coding, Testing, Maintenance): Requirements gathering must precede designing as it defines what needs to be built.
Option C (Coding, Designing, Testing, Maintenance, Requirements): Coding cannot start without prior requirements analysis and design.
The SDLC phases must follow a logical sequence to ensure systematic development and delivery of high-quality software. The correct order—Requirements → Designing → Coding → Testing → Maintenance—is essential for efficient project execution and aligns with industry standards like Waterfall or V-Model methodologies.
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