Question

Southbound protocols which connect to a network's physical devices are typically linked to the SDN controller by using a ______. This is a database or registry of services provided by the southbound APIs. The APIs are bound to the registry so that the ______ can service an application request.

a) Southbound Database, SDN controller
b) Service Registry, SDN controller
c) Controller Registry, SDN application
d) API Registry, Network Device

Answer 1

The Service Registry is a database or registry of services provided by the southbound APIs. These APIs are bound to the registry so that the SDN controller can service an application request.

Step-by-step explanation:

The correct answer is b) Service Registry, SDN controller.

The Service Registry is a database or registry of services provided by the southbound APIs. These APIs are bound to the registry so that the SDN controller can service an application request. This means that when an application sends a request to the SDN controller, it can access the necessary services provided by the southbound protocols through the Service Registry.

For example, let's say an application wants to communicate with a physical device on a network. It can send a request to the SDN controller, which will use the Service Registry to locate and utilize the appropriate southbound API to interact with the device.