Types of Network Operations in Software-Defined Networking (SDN)
Question
With software-defined networking (SDN), which two types of network operations are segregated to allow for granularity and delegation of administrative access and functions?
Answers
Explanations
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A. B. C. D.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.
Software-defined networking (SDN) is an approach to network management that allows network administrators to programmatically control the behavior of a network through a centralized software-based controller. With SDN, the control plane is separated from the data plane, allowing network administrators to manage network traffic in a more flexible and efficient way.
In SDN, two types of network operations are typically segregated to allow for granularity and delegation of administrative access and functions. These two types of operations are:
Forwarding: Forwarding refers to the process of sending network traffic from one network node to another. In SDN, the forwarding function is typically implemented on network switches or routers that are controlled by the SDN controller. The SDN controller maintains a centralized view of the network topology and can use this information to program the forwarding behavior of the switches or routers.
Filtering: Filtering refers to the process of selectively allowing or blocking network traffic based on predefined criteria. In SDN, filtering is typically implemented using a network firewall that is controlled by the SDN controller. The SDN controller can program the firewall to filter network traffic based on a variety of criteria, such as source or destination IP address, port number, or protocol.
Therefore, the correct answer is option A: Filtering and forwarding. With SDN, filtering and forwarding are segregated to allow for granularity and delegation of administrative access and functions. This separation of duties allows network administrators to manage network traffic in a more flexible and efficient way.
