300-415 Question #27: Real Exam Question with Answer & Explanation

The correct answer is B: The separation of management plane, control plane and data plane to enable horizontal scaling. Key capabilities of an SD-WAN solution include the architectural separation of management, control, and data planes for horizontal scaling, and the flexibility to deploy management and control functions redundantly, either in the cloud or on-premises.

Architecture

Question

Which two options are SD-WAN solution capabilities? (Choose two.)

Options

AAbility to provide and integrate security with complementary products and applications
BThe separation of management plane, control plane and data plane to enable horizontal scaling
CTruck roll branch turn up for easy provisioning and new installations
DCloud hosted or on-Premise fully redundant management and control plane functions

Explanation

Key capabilities of an SD-WAN solution include the architectural separation of management, control, and data planes for horizontal scaling, and the flexibility to deploy management and control functions redundantly, either in the cloud or on-premises.

Common mistakes.

A. While SD-WAN solutions often integrate security, the ability to integrate security with complementary products is a general IT capability and not a unique, defining architectural capability of SD-WAN itself.
C. The concept of 'truck roll branch turn up' contradicts a primary benefit of SD-WAN, which is 'zero-touch provisioning' designed to minimize or eliminate the need for manual on-site intervention for new installations.

Concept tested. Core capabilities and architecture of Cisco SD-WAN.

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/overview/sd-wan-overview.html

Topics

#SD-WAN Architecture#Control Plane#Management Plane#Controller Deployment

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