What is the function of a controller in controller-based networking?
What is the function of a controller in controller-based networking?
A controller in controller-based networking serves as the centralized management point of an SDN (Software-Defined Networking) architecture. It is responsible for managing network devices, implementing network policies, and providing a central point of control and visibility for the entire network. This centralization allows for dynamic, programmatically efficient network configuration and enables greater agility, scalability, and flexibility in response to changing business needs.
The function of a controller in controller-based networking is A. It serves as the centralized management point of an SDN (Software-Defined Networking) architecture . The controller is responsible for managing network devices and implementing network policies, as well as providing a central point of control and visibility for the entire network. It enables dynamic, programmatically efficient network configuration through the use of software-based controllers or a centralized controller with open APIs (Application Programming Interfaces) that communicate with network devices and applications . This promotes increased network agility, scalability, and flexibility in response to changing business needs.
Answer A is correct because a controller, or SDN controller, centralizes the control of the networking devices. https://www.ciscopress.com/articles/article.asp?p=2995354&seqNum=2#:~:text=A%20controller%2C%20or%20SDN%20controller,the%20devices'%20distributed%20control%20plane.
but A says that "centralized management point" , isn't it management plane and control plane is different in SDN Architecture?
"What is the function of a controller in controller-based networking?" You might wanna read the question again no where does it mention control plane. It just asks what is the point of the controller.
it also confused me, this is a very tricky question if you don't read it at least twice.
A is correct.
A is correct
In the context of the question, both options B and C are valid functions of an endpoint, but option B describes a broader function—connecting server and client devices to a network—which encompasses the role of endpoints in facilitating communication between various devices on the network.