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Pregunta PMI-PMP: Which type of story would be used when an e | iPMOGuide

Pregunta PMI-PMP:

Which type of story would be used when an estimate is not available due to lack of knowledge of the technology required to implement the story?
Anonymous Quiz
10%
Defect.
32%
Nonfunctional.
17%
Slack.
42%
Spike.