What concept describes the removal of a network boundary and the ongoing changes to that boundary?

• A. Downstream Liability
• B. BYOD
• C. De-Perimeterization
• D. Policies

Answer: (C)

De-perimeterization describes the idea that the traditional network boundary is removed or continually shifting as resources move to the cloud, are accessed from mobile devices, or are provided by third-party services. In this approach, security isn’t based on being inside a fixed perimeter; it’s about verifying who and what is requesting access no matter where they are. That means focusing on strong identity, device health, and context, and applying protections at the data and application levels as well as at the access point. This mindset leads to ongoing adjustments to access controls, continuous monitoring, and zero-trust principles because the boundary is no longer a static, well-defined fence.

The other options don’t describe this boundary-dissolving concept. Downstream liability concerns who is responsible for breaches or damages in the supply chain, BYOD is simply a policy about using personal devices, and policies are general governance rules.