WGU C857 Pre-Assessment Questions and Answers with Rationale

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WGU C857 Pre-Assessment Questions and Answers with Rationale 1. Management has requested that the development team have a moderator review their newest module of code.Which type of review is being ... asked for? A. Walkthrough B. Informal C. Inspection D. End User -Answer- C. Inspection "Walkthrough" is incorrect because code walkthroughs do not typically have a moderator. "End user" is incorrect because end users tests (also known as usability tests) do not typically have a moderator. "Informal" is not the best answer because it is too inprecise. While code walkthroughs, code inspections, and end-user tests are all informal techniques, only code inspections use a moderator."Inspection" is the right answer because it should always use a moderator during the review.See sections 3.1 and 3.2 in the WGU C857 online learning materials. 2. An informal review of a module of code has been completed. The development team has decided to evaluate the module from an end user perspective.Which method should be used to determine if the code meets quality standards? Human Black Box Inspection White Box -Answer- Black Box "Human" is incorrect because it is too general human testing might or might not be from an end user perspective. "Inspection" is incorrect because inspection tests examine code, which is not an end user perspective. "White box" is incorrect because white box also consider code logic, which is not an end user perspective."Black box" is the best answer because it is the only choice left and also because black box testing does not consider code logic, which can be an end user perspective. Note that developers can and should try to apply an end user perspective as they develop.See section 2.2 in the WGU C857 online learning materials. 3. There is a requirement to verify the usability of a product as it is being delivered to ensure overall design and functionality without regard to the internal functioning of the code. Which quality method meets this requirement? Code inspection Black box testing White box testing Peer reviews -Answer- Black Box Testing "Code inspection" is incorrect because that examines internal code functioning. "White box testing" is incorrect because that also examines internal code functioning. "Peer reviews" is incorrect because that also examines internal code functioning (peers are usually other developers). "Black box testing" is the correct answer because it is the only choice that does not examine internal code functioning.See section 2.2 in the WGU C857 online learning materials. 4. QA proposes a formal group meeting where the programmer narrates, statement by statement, the logic of a program as an error detection technique. Which quality method meets this proposal? Peer review Black box testing Code inspection Grey box testing -Answer- Code Inspection * Peer Review: Peer reviews are not formal, they are informal.* Black box testing. Black box testing does not examine code.* Grey box testing. Grey box testing does not generally consider code (although it might consider code documentation).Correct:* Code inspection: Code inspections are formal inspections of code statements.See "Testing Fundamentals chapter 3". 5. A program's state changes from what is expected.Which practice should be applied to find the location of the defect? Backtracking Induction Deduction Error Analysis -Answer- BackTracking * Induction: Inductive debugging moves from details to a general problem hypothesis, but it does not find exact code locations. * Deduction: * Error Analysis: Correct: * Backtracking: Backtrack debugging works backwards from the code location where the bug was first noticed to the code location where the cause of the problem was first introduced. See "Testing Consideration" learning materials sections 8.2, 8.3, 8.4. [Show More]

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