Which characteristic of Software Defined Networks (SDN) is also true for VMware SD-WAN

Question

Options

• AVMware SD-WAN requires specialized hardware to run its software
• BVMware SD -WAN provides distributed management and control plane
• CVMware SU-WAN allows customers to program the forwarding plane
• DVMware SD-WAN provides separation of management control plane, and the data plane.

• A
  76% (19)
• B
  8% (2)
• C
  12% (3)
• D
  4% (1)

Explanation

Important note: The provided answer key appears to contain an error. Option D is the correct answer based on networking fundamentals, and explaining A as correct would likely cause you to fail real exam questions.

Why D is correct: A foundational characteristic of SDN is the separation of the control plane (decision-making) from the data plane (packet forwarding). VMware SD-WAN shares this exact architecture - the SD-WAN Orchestrator and Controller handle management and control, while the Edge appliances handle data forwarding independently.

Why the distractors are wrong:

• A is incorrect because SDN is specifically defined by its ability to run on commodity (standard, non-specialized) hardware - requiring specialized hardware is the opposite of an SDN trait, and VMware SD-WAN supports virtual edges on standard x86 servers.
• B is wrong because SDN uses centralized control, not distributed - and VMware SD-WAN's Orchestrator is similarly a centralized control point.
• C is partially an SDN concept (programmable forwarding), but VMware SD-WAN does not expose the forwarding plane for direct customer programming the way pure SDN OpenFlow implementations do.

Memory tip: Remember SDN with the acronym CSP - Centralised control, Separated planes, Programmable forwarding on commodity hardware. VMware SD-WAN mirrors SDN most closely on the "separated planes" point, making D the reliable choice.

Verify this with your course materials or instructor - answer key errors in practice banks are common.

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