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Questions and Answers
What is the purpose of the Design phase in the Software Development Life Cycle?
What is the purpose of the Design phase in the Software Development Life Cycle?
- To develop the software modules
- To produce a solution to a problem given in the SRS document (correct)
- To test the software system
- To gather software requirements
What does high coupling between software modules signify?
What does high coupling between software modules signify?
- Modules are independent and changes in one module have little impact on other modules
- Modules are unrelated and do not interact
- Modules are closely connected and changes in one module may affect other modules (correct)
- Modules are loosely related and serve multiple purposes
What does low cohesion within a module indicate?
What does low cohesion within a module indicate?
- Elements within the module work together to fulfill a single, well-defined purpose
- Elements within the module are independent and focused on a single purpose
- Elements within the module are unrelated and do not interact
- Elements within the module are loosely related and serve multiple purposes (correct)
How do high coupling and low cohesion affect a software system?
How do high coupling and low cohesion affect a software system?
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What is the first part of the iterative design process according to the text?
What is the first part of the iterative design process according to the text?
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Study Notes
Software Development Life Cycle (SDLC) - Design Phase
- The Design Phase in the SDLC is crucial for defining the software's architecture, modules, interfaces, and data structures. It translates user requirements into a technical blueprint for the development team.
Coupling in Software Modules
- High coupling refers to a strong dependency between software modules. This means that one module relies heavily on the internals of others.
Cohesion Within Modules
- Low cohesion within a module means that its functionalities are loosely related or disparate. This implies a lack of focus and a potential for scattered logic within the module.
Impact of Coupling and Cohesion
- High coupling and low cohesion often lead to complex, brittle, and difficult-to-maintain software systems. Changes in one module can ripple through the entire system, making it prone to errors.
- High coupling makes it difficult to reuse individual modules in other projects.
- Low cohesion increases complexity during development and testing, as internal module logic becomes intertwined.
Iterative Design Process: First Part
- The first part of the iterative design process typically involves defining the system's overall architecture, outlining major components, and creating high-level design models.
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Description
Learn about the key concepts of coupling and cohesion in software engineering, and how they are used to measure the quality of a software system's design. Understand the significance of these concepts in the design phase of the Software Development Life Cycle.
