With software-defined networking (SDN), which two types of network operations are segregated to allow for granularity and delegation of administrative access and functions?
Suggested Answer:A🗳️
With SDN, the filtering and forwarding capabilities and administration are separated. This allows the cloud provider to build interfaces and management tools for administrative delegation of filtering configuration, without having to allow direct access to underlying network equipment. Firewalling and protocols are both terms related to networks, but they are not components SDN is concerned with.
In Software-Defined Networking (SDN), the traditional networking architecture is separated into two distinct planes:
Control Plane (Protocol) → Responsible for making decisions about where traffic should be sent. This includes routing, network topology management, and protocol operations.
Data Plane (Forwarding) → Responsible for actually forwarding the packets based on the control plane's decisions.
Why Not the Others?
A. Filtering and forwarding: Filtering (such as ACLs or firewall rules) is more of a security function and not a fundamental separation in SDN.
B. Filtering and firewalling: Both are security mechanisms, not SDN’s core architectural separation.
C. Firewalling and forwarding: Firewalling is an application-layer security function, whereas forwarding is a fundamental network function.
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