400-007 Question #413: Real Exam Question with Answer & Explanation

The correct answer is D: SDN via controller APIs. In Software Defined Networking (SDN), the controller is the central component that communicates with the data plane (network devices like switches and routers) to enforce policies and make decisions. The controller APIs allow applications to interact with the controller to define

Question

One of the key components in an SDN-controlled network is the ability to have a piece of software that can manipulate the devices in the network and also provide the intelligent and predictable behavior that is expected. Which component provides this feature?

Options

ASDN over applications
BSDN via overlays
CSDN via device APIs
DSDN via controller APIs

Explanation

In Software Defined Networking (SDN), the controller is the central component that communicates with the data plane (network devices like switches and routers) to enforce policies and make decisions. The controller APIs allow applications to interact with the controller to define desired network behavior. Controller APIs (also called northbound APIs) expose the controller's capabilities to external applications, allowing intelligent and programmable control over the network. This enables automation, orchestration, and policy-driven network management.

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