QUESTION: 41

In general, why is it NOT a good idea to estimate the testing effort based only on a percentage of development effort? Identify THREE valid reasons.

The quality of the development estimate may be poor.
In general bottom-up estimation is always better than top-down estimation.
The percentage based technique only applies to the V life cycle model.
Using the same percentage every time does not address the level of risk of the application to be tested.
The maturity of the organization, e.g. the quality of the test basis, quality of development testing, configuration management, availability of test tools, also influence the effort needed for testing.
It builds on large set of historical data
The result is almost always a too low estimate for the required test effort

Answer(s): A,D,E

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QUESTION: 42

In general which part of the testing activity is most difficult to estimate?

Test planning
Test execution
Test management
Test design

Answer(s): B

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QUESTION: 43

Identify THREE items that would be part of the work-breakdown structure showing the key testing activities for the acceptance test project.

Test planning, test case preparation and test execution for each of the four iterations
Work should be explicitly allocated to test completion, test management, installation and to training on using the system
Activities to deploy the system in the user environment
Regression testing in the second, third and fourth iterations
Development activities for unit and integration testing
Reviews on requirements documentation
Defining test environment requirements for system testing

Answer(s): A,B,D

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The test improvement project will take place in an organization developing a safety-critical avionics application. Which one of the following standards do you believe would be most appropriate to take into account for compliance during your assignment?

ISO 9126
IEEE 829
BS 7925/2
DO-178B

Answer(s): D

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