200-301 · Question #634
What is the role of disaggregation in controller-based networking?
The correct answer is A. It divides the control-plane and data-plane functions.. In controller-based networking, disaggregation refers to the fundamental separation of the network device's control plane from its data plane, allowing for centralized control and programmable network behavior.
Question
What is the role of disaggregation in controller-based networking?
Options
- AIt divides the control-plane and data-plane functions.
- BIt summarizes the routes between the core and distribution layers of the network topology.
- CIt enables a network topology to quickly adjust from a ring network to a star network
- DIt streamlines traffic handling by assigning individual devices to perform either Layer 2 or Layer 3
How the community answered
(28 responses)- A89% (25)
- B4% (1)
- C7% (2)
Why each option
In controller-based networking, disaggregation refers to the fundamental separation of the network device's control plane from its data plane, allowing for centralized control and programmable network behavior.
Disaggregation in controller-based networking, such as Software-Defined Networking (SDN), fundamentally involves separating the control plane (which makes forwarding decisions) from the data plane (which performs the actual forwarding of packets). This architectural shift enables a centralized controller to manage the network behavior of multiple forwarding devices, enhancing programmability and automation.
Route summarization is a routing optimization technique to reduce the size of routing tables, which is distinct from the architectural disaggregation of network planes.
While controller-based networking can facilitate network reconfigurations, disaggregation itself specifically refers to the plane separation, not the dynamic adjustment between different network topologies.
Assigning devices to perform either Layer 2 or Layer 3 functions describes traditional network layering and specialization, which is distinct from the disaggregation of control and data planes within a device or across a network.
Concept tested: Controller-based networking disaggregation
Source: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/open-network-environment/white-paper-c11-730414.html
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