Which of the following best describes the function of CBAM in the Nokia CPC?

The Nokia CloudBand Application Manager (CBAM) is a carrier-grade, generic Virtualized Network Function Manager (VNFM). Within the ETSI NFV Management and Orchestration (MANO) framework, the VNFM is responsible for the complete lifecycle management of one or more VNFs. When managing the Nokia Converged Policy Controller (CPC), which is deployed as a VNF, CBAM's function is to handle its instantiation, configuration, scaling (in/out and up/down), monitoring, healing, and termination. It acts as the management entity for the virtualized aspects of the CPC, interacting with the Virtualized Infrastructure Manager (VIM) below it and potentially an NFV Orchestrator (NFVO) above it.

A. The EMS function manages the service-level configuration and operational state of the CPC application itself, not the lifecycle of its virtual machines or containers.
B. The NFVO function operates at a higher level, managing end-to-end Network Services which may be composed of multiple VNFs, including the CPC. CBAM focuses on the individual VNF.
D. The VIM function is performed by platforms like OpenStack or VMware, which manage the underlying physical and virtual compute, storage, and network resources of the cloud environment.

1. Nokia CloudBand Application Manager (CBAM) Data Sheet. (Document ID: SR2005016383EN, May 2020). Page 1, Section "Product description" states, "The Nokia CloudBand Application Manager (CBAM) is a carrier-grade, generic virtualized network function manager (VNFM) that is fully aligned with the European Telecommunications Standards Institute (ETSI) network functions virtualization (NFV) management and orchestration (MANO) architecture."

2. ETSI GS NFV-MAN 001 V1.1.1 (2014-12), "Network Functions Virtualisation (NFV); Management and Orchestration." Section 5.3, "VNF Manager," details the responsibilities of the VNFM, which include "VNF instantiation, update, query, scaling and termination." This standard defines the role that CBAM fulfills.

3. Nokia Converged Policy Controller (CPC) 21 Product Description. (Document ID: SR2103034111EN, March 2021). Page 4, Section "Cloud-native architecture," describes the CPC's design for deployment in virtualized and cloud environments, confirming its status as a VNF/CNF whose lifecycle is managed by a MANO component like CBAM.