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ISEB Intermediate Certificate
in Software Testing
Section 1: Sec One (1 to 5)
A computerized system is being created to monitor the life support system on board a
submarine. It monitors air quality, water supplies and temperature. This system will be
supplied and maintained by SubsInc. SubsInc uses the V-model for software development
and conducts four levels of testing, from unit through to operational and site acceptance
testing. Two key risks identified for the air quality system are:
1. If the percentage of oxygen in the air falls too low, personnel may suffocate
2. If the concentration of carbon dioxide in the air rises too high, the air may become toxic.
To address these risks, the requirement specification for this system includes the following
R1) Oxygen must be replaced as it is consumed. R2) Carbon dioxide must be removed from
the air. These requirements must be reflected in the functional, technical and program
specification documents. You are a newly recruited test manager. A risk register has been
produced with the following additional risks identified.
Which one is a product risk associated with the air quality management system?
A. The system required to monitor oxygen levels may be more expensive than those required
to monitor air temperatures.
B. SubsInc may need to recruit extra developers and testers to deliver the project on time.
C. Oxygen levels may reach dangerously low levels.
D. Extreme temperatures may lead to heat exhaustion of personnel.
Which of the following would be an entry criterion into site acceptance testing for the air
quality monitoring system?
A. That the code written to fulfil the requirement to monitor carbon dioxide levels has been
100% path tested.
B. That the functional specification accurately refle