TOPIC: What is Box Testing?

Can anyone help me understand the definition to box testing? The definition isn't in either the PMBOX or Agile guides.

Hello Megan,
I might be completely wrong, but are you referring to a method used in software development, broken down into white box testing and black box testing?
In any case, I haven't come across "box testing" in the context of the PMP or any of PMI's reference material that I've seen, so it's highly unlikely to come up as a testable topic in the exam.

Yes, I believe that's what I'm referring to. It seems that the practice test question on another platform was trying to fool me. I appreciate your help!

No worries; we're here to help each other out.
If I can reassure you a little, during my PMP exam I noticed an absence of testing of knowledge on subjects that hadn't been covered properly in the PMI materials or in the PM PrepCast Quizzes/Exams. In fact, when an "outside" term was introduced in a question context, it was also explained within the question text so that anyone unfamiliar with that particular term could understand the question without specialist knowledge (as 'Box Testing' would have been for me, had I come across it without any further information). That being said, I was definitely glad I'd done all the PrepCast questions and then read the solutions/explanations, as they had provided plenty of "outside" terms, on top of what I'd read in the PMI materials, which meant that I didn't come across any completely new-to-me concepts in the real exam. Keep up the hard work and good luck.