Communication between SDN controllers and routers is governed by Northbound APIs.
Explanation;
-The northbound application programming interface (API) on an SDN controller enables applications and orchestration systems to program the network and request services from it.
-Northbound APIs can enable network functions like path computation, loop avoidance, routing and security. The northbound APIs can also used to facilitate innovation and enable efficient orchestration and automation of the network to align with the needs of different applications via SDN network programmability.
The terms that the student uses - class, order, and family - are all words that are used to describe species. Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world.
Their outermost shell has the maximum number of electrons it can hold.
Elements only react with each other to gain electrons to complete their outermost shell. Since noble gases already have a complete outer shell, they're usually inactive.
