QuestionQ16

Cloud Infrastructure (NFV and SDN)

Which SDN solution lets the control plane remain on legacy hardware as an interim measure until you are ready to replace the existing hardware?

  • A SDN using NVGRE
  • B SDN as an overlay
  • C SDN using an API
  • D open SDN
Explanation

SDN using an API adds programmability and centralized automation to existing devices without requiring their traditional control planes to be replaced immediately. APIs can expose and program control, management, and data-plane functions on the retained hardware, making this an incremental migration approach.

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