chapter 2 Flashcards
what is capability maturity model?
is a benchmark that measures the maturity of an organizations software process.
define the 5 levels of CMM.
- initial - 70
- repeated - 15
- defined - 10
- managed - 5
- optimized - 1
which level of CMM is characterized by chaotic and inconsistent software process?
initial
at repeatable level, what management practices are in place?
PR Can Tell Quality
- project planning
- req mg’t
- configuration mg’t
- tracking & oversight
- quality assurance
at what CMM level, are the organizations processes; documented, standardized & organized?
- defined
at defined level, what management practices are in place?
Please Prepare Precisely for IT
- peer review
- process focus
- process definition
- intergroup communication
- training
at what CMM level, are processes controlled using quantitative measurements?
- managed
at what CMM level, is the main focus the continuous improvement of performance?
optimized
what is a software process model?
- a method to divide a software process into distinct phases and describe activities performed at each stage.
_______________ is an abstract representation of a software dev’t process?
software process model
what things does a software process model define?
Thanks to Inputs / Outputs Calculators Function
- tasks
- inputs & outputs for tasks
- conditions for tasks
- flow & sequence for tasks
what process model takes a linear sequential flow?
waterfall model
what triggers the beginning of a new phase in waterfall model?
- no phase overlaps, so the end of a previous phase.
what are the stages in waterfall model?
- reqs
- design
- dev’t
- test
- deployment
- maintenance
what are the advantages of waterfall model?
- clear milestones
- structure & stability
- easy to use
- good management control
- when quality > cost / schedule
what are the disadvantages of waterfall model?
- no user preview
- reqs must be known
- future deliverables are frozen
- false sense of progress
- integration happens at the end
- linear instead of iterative
when to use waterfall model?
- clear reqs
- clear technology
- clear product definition
- creating new system for existing product
- porting an existing system to new platform
which process model is characterized by rigidity?
waterfall
which process model is characterized by “quick & dirty” methods.
structured evolutionary prototyping model
what is prototyping?
building a software product that displays the functionality of the product but not the actual logic
what are the steps in SEPM?
- develop project plan
- create partial model
- specify reqs for partial model
- develop prototype
- demonstrate prototype
- repeat
what are advantages of SEPM?
- clear signs of progress
- user feedback
- accurate end product
what are disadvantages of SEPM?
- “code & fix”
- “quick & dirty”
- maintainability is overlooked
- user may want prototype delivered
- loop may be never ending
when to use SEPM?
- unclear reqs
- new dev’t
- UI dev’t
- OO dev’t
- short demonstrations
which model provides high quality with reduced time?
RAD model
_________ uses minimal planning in favor of rapid prototyping?
RAD model
what are the phases of RAD model?
R U Coming to Class
- req planning
- user description
- construction
- cutover
what is used to manage risk of cost & schedule in RAD model?
time-box approach
what are the advantages of RAD?
- lower cost
- time box
- user feedback
- from documentation to code
what are disadvantages of RAD?
- quick response to users
- commitment to rapid activities
- requires modularization
- unachieved closure
- hard to use with legacy systems
when to use RAD?
- reasonably known reqs
- system modularization
- time box
- user involvement
- low technical skill
- low performance
- incremental progress
what 2 things does spiral SDLC model combine?
risk analysis of RAD & linear sequential flow of waterfall
at which stage of the spiral model are all proposed alternatives analyzed for risk?
identify & resolve risk
at what stage of the spiral model are prototypes built?
identify & resolve risk
at what stage of the spiral model are features like designing and code reviews implemented?
develop next version
at what stage of the spiral model does customer evaluation take place?
plan next phase
what are the phases of the spiral model?
- define obj, constraints & alt
- identify & resolve risks
- develop next version
- plan next phase
what are advantages of spiral model?
- early risk indications
- frequent cost assessment
- early dev’t of risky features
- design doesn’t need to be perfect
- user feedback
what are disadvantages of spiral model?
- unclear milestones
- requires risk analyst
- complex model
- excessive for small projects
- reassignment of developers during non - dev’tal phases
when to use spiral model?
- med - high risk projects
- complex reqs
- unknown reqs
- new product
- strict budget & risk evaluation
- long term commitment
