Effective CISSP Questions

Your company decides to start the business of selling toys online and shipping globally. The E-Commerce system that supports the new business will be developed in-house. The COO, who doesn’t like surprises, sponsors this initiative, and the reliability of the production system is the priority. He asked for periodic review and demonstration of development progress or prototypes and thought the daily standup meeting is favorable.  The project team is evaluating the development approach. Which of the following is the best?
A. Waterfall Model
B. Agile
C. Spiral Model

Kindly be reminded that the suggested answer is for your reference only. It doesn’t matter whether you have the right or wrong answer. What really matters is your reasoning process and justifications.

My suggested answer is C. Spiral Model.



Agile is hot, but there are many misconceptions about it. Frequent delivery of working software or values is one of its core concepts. Delivery means hand over working software to customers to create values.

Development progress or prototypes are not deliverable working software; they create no values because they don’t operate in the production environment.


From the perspective of, there’s no project manager but a product owner. They call the daily event as Daily Scrum instead of a daily standup meeting.

Periodic Review

Periodic review, demonstration, and daily meeting (standup or being sat) are general management practices. They are not specific to Agile or Scrum.

Waterfall Model

The Waterfall Model delivers at the end of the project. Customers may review a pile of user requirement specification (URS) documents after the requirement analysis; documented designs as the solution in documents as well. In each phase, customers get nothing real until the end of the project.

Spiral Model

The Spiral Model is an improvement of the Waterfall Model. It delivers at the end of the project but demonstrates prototypes or work products to customers after each iteration, which can be treated as a small waterfall.

1 thought on “CISSP PRACTICE QUESTIONS – 20191030

  1. Pingback: Agile by Wentz Wu, CISSP-ISSMP,ISSAP,ISSEP/CISM/PMP/CBAP

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