题目内容

In a real-time environment there is little control over the inputs. What can be used to partially circumvent this problem? A:

A. real-time operating system
B. simulator
C. data base management system
D. virtual reality synthesiser
E. configuration control tool

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Utility is:

A. the extent to which the user's needs are met when a correct product is used under conditions permitted by its specifications.
B. a measure of the frequency and criticality of product failure.
C. a function of the range of conditions under which it will operate.
D. the extent to which the product meets its constraints with regard to response time or space requirements.

Reliability is:

A. the extent to which the user's needs are met when a correct product is used under conditions permitted by its specifications.
B. a measure of the frequency and criticality of product failure.
C. a function of the range of conditions under which it will operate.
D. the extent to which the product meets its constraints with regard to response time or space requirements.

Robustness is:

A. the extent to which the user's needs are met when a correct product is used under conditions permitted by its specifications.
B. a measure of the frequency and criticality of product failure.
C. a function of the range of conditions under which it will operate.
D. the extent to which the product meets its constraints with regard to response time or space requirements.

Performance is:

A. the extent to which the user's needs are met when a correct product is used under conditions permitted by its specifications.
B. a measure of the frequency and criticality of product failure.
C. a function of the range of conditions under which it will operate.
D. the extent to which the product meets its constraints with regard to response time or space requirements.

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