What are the three major blocks of the NFV architectureSelect one:a. OSS, BSS, and VNFb. NF, NFVI, and MANOc. ETSI, MANO, and VNFd. VIM, NFVO, and VNFM

The three major blocks of the NFV (Network Functions Virtualization) architecture are:

b. NF (Network Functions), NFVI (Network Functions Virtualization Infrastructure), and MANO (Management and Orchestration).

Here's a brief explanation of each:

1. NF (Network Functions): These are software implementations of network functions that can be deployed on the NFVI.

2. NFVI (Network Functions Virtualization Infrastructure): This includes the hardware and software components where the virtual network functions are deployed.

3. MANO (Management and Orchestration): This is the framework for orchestrating and managing the NFV infrastructure and software. It includes three main components: NFV Orchestrator (NFVO), VNF (Virtual Network Functions) Manager, and Virtualized Infrastructure Manager (VIM).