350-401 Question #621: Real Exam Question with Answer & Explanation

Question

A customer transitions a wired environment to a Cisco SD-Access solution. The customer does not want to integrate the wireless network with the fabric. Which wireless deployment approach enables the two systems to coexist and meets the customer requirement?

Options

• ADeploy the APs in autonomous mode
• BDeploy the wireless network over the top of the fabric
• CDeploy a separate network for the wireless environment
• DImplement a Cisco DNA Center to manage the two networks

Explanation

Explanation

Deploying the wireless network over the top of the fabric (also called "over-the-top" or OTT) allows the wireless infrastructure to operate independently, using the SD-Access wired fabric purely as an IP transport layer - meaning both systems coexist without the wireless being integrated into the fabric control plane. This directly satisfies the customer's requirement to keep the two systems separate while still leveraging the existing infrastructure.

Why the distractors are wrong:

• A (Autonomous APs): While autonomous APs operate independently, this is an outdated deployment model that doesn't represent a modern coexistence strategy with SD-Access and doesn't describe a recognized SD-Access wireless deployment option.
• C (Separate network): Building an entirely separate physical network is costly and inefficient; it doesn't leverage the existing fabric infrastructure and goes beyond what's needed.
• D (Cisco DNA Center): DNA Center is a management platform, not a deployment architecture - adding it alone doesn't define how the wireless coexists with the fabric.

Memory Tip: Think of "over the top" like streaming services running over an internet connection - the wireless rides on top of the fabric network without being embedded in it. When you see "coexist without integration," think OTT (Over-the-Top).

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