Traditional, controller-based, and software-defined networking models

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Compare traditional network management with controller-based networking in terms of device configuration, policy deployment, and operational visibility.
Describe the characteristics of software-defined networking, including abstraction, centralized policy control, and programmability.
Explain the role of a controller in controller-based architectures, including centralized management, orchestration, and policy-based automation.

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Identify typical advantages of controller-based networking, such as simplified operations, consistent policy application, and improved network-wide visibility.

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