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A car manufacturer is updating its airbag deployment system for its family cars. It has increased the number of airbags from four to nine. This has necessitated an upgrade to the airbag control software (ACS) to allow deployment of the extra airbags where appropriate. The car manufacturer receives information from on-board sensors. From this, it calculates the amount of deployment needed (minimal, medium and full), and from which airbag(s). For this upgrade, it will receive information from extra sensors to be used in its calculations. The car manufacturer employs its own in-house software development team. It uses the V model for its software development. There are four stages of testing, from unit through to factory acceptance testing. The development team is made up of project, programming and test managers. The programmers use object-oriented methods for development. The car manufacturer wishes to be first to market with the extra airbags, which will allow it to increase the safety ratings for its family cars, thereby increasing sales in a very competitive market. Which of the following are risks associated with the use of the V model for this upgrade?
I . The sensors may not be responsive enough in impacts.
II . The manufacturer may not be able to process the information received from the sensors quickly enough.
III . The time required to create the high- and low-level designs may mean that insufficient time can be spent on system testing.
IV . The system may fail factory acceptance testing, necessitating costly rework.