What are two functions of a Network Services Orchestrator in an NFV environment? (Choose two.)

What are two functions of a Network Services Orchestrator in an NFV environment? (Choose two.)
A . It operates at the resource-facing services layer and provides overall lifecycle management at the network service level.
B. It provides an API-based northbound interface for transparent integration with systems that operate at the resource-facing services layer.
C. It provides a standards-based southbound interface for transparent integration with systems that operate at the customer-facing services layer.
D. It provides a standards-based northbound interface for transparent integration with systems that operate at the customer-facing services layer.
E. It operates at the customer-facing services layer and provides the management interface for the virtual network devices.

View Answer

Answer: A,D

Explanation:

In a Network Function Virtualization (NFV) environment, the Network Services Orchestrator (NSO) essentially performs service orchestration. It has the following two main functions:

It operates at the resource-facing services layer, where it provides overall lifecycle management at the network service level. This includes things like managing and coordinating resources, and managing services across multiple domains or subsystems.

It provides a standards-based northbound interface for transparent integration with systems that operate at the customer-facing services layer. This allows it to communicate with other systems in the network, such as other orchestrators or management systems, in a way that those systems can understand.