Table of Contents
Question
What is an architectural framework created by ETSI that defines standards to decouple network functions from proprietary hardware-based appliances and have them run in software on standard x86 servers?
A. NPIV
B. NFVIS
C. NFV
D. VNF
Answer
C. NFV
Explanation
The correct answer to the question is C. NFV (Network Functions Virtualization).
NFV (Network Functions Virtualization) is an architectural framework created by ETSI (European Telecommunications Standards Institute) that defines standards to decouple network functions from proprietary hardware-based appliances and have them run in software on standard x86 servers. This approach aims to replace traditional, dedicated network hardware appliances with virtualized network functions that can be deployed on general-purpose servers, resulting in increased flexibility, scalability, and cost efficiency.
By virtualizing network functions, NFV enables network operators to deploy and manage network services using software-based virtualized instances, known as Virtual Network Functions (VNFs), running on standard servers. These VNFs can be easily scaled up or down, dynamically allocated, and chained together to create complex network services.
NFV provides several benefits, including:
1. Agility: NFV allows network operators to rapidly deploy and scale network services by leveraging software-based VNFs. This agility enables quicker service provisioning and reduces time-to-market for new services.
2. Cost Efficiency: By utilizing commercial off-the-shelf (COTS) hardware, NFV reduces the reliance on specialized, expensive hardware appliances. This results in cost savings through hardware consolidation, reduced power consumption, and improved resource utilization.
3. Scalability: NFV enables elastic scaling of network services based on demand. By dynamically provisioning or deprovisioning VNF instances, operators can efficiently allocate resources and ensure optimal performance during peak usage periods.
4. Service Innovation: With the decoupling of network functions from hardware, NFV promotes service innovation by allowing network operators to rapidly introduce new services and experiment with different service architectures. It provides a flexible environment for service chaining and orchestration.
5. Vendor Independence: NFV promotes interoperability and vendor independence by defining standardized interfaces and protocols. This enables network operators to choose best-of-breed VNFs from different vendors and integrate them into their networks seamlessly.
In summary, NFV is an architectural framework that enables the virtualization of network functions, decoupling them from proprietary hardware appliances. By running network functions on standard x86 servers as software-based VNFs, NFV brings agility, cost efficiency, scalability, service innovation, and vendor independence to network operators.
Reference
- Virtualization Functions (NFVI, VNF) (networklessons.com)
- NFV Architectural Framework: The ETSI architectural framework explained (stlpartners.com)
- GS MEC 003 – V2.2.1 – Multi-access Edge Computing (MEC); Framework and Reference Architecture (etsi.org)
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