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400-007 · Question #43
400-007 Question #43: Real Exam Question with Answer & Explanation
The correct answer is C: High-end routers are required to support NFV. NFV introduces dependencies on high-performance compute platforms and a management orchestration layer that represent real drawbacks when incorporating NFV into a network design.
Question
Which two possible drawbacks should you consider when introducing Network Functions Virtualization in a network design? (Choose two)
Options
- ABandwidth utilization increases
- BTraffic flows are suboptimal
- CHigh-end routers are required to support NFV
- DOpenFlow must be supported in the network
- EAn SDN orchestration layer is required to support NFV
Explanation
NFV introduces dependencies on high-performance compute platforms and a management orchestration layer that represent real drawbacks when incorporating NFV into a network design.
Common mistakes.
- A. NFV does not inherently increase bandwidth utilization; it changes where and how traffic is processed but does not add traffic to the network by design.
- B. While suboptimal traffic flows are possible in some NFV deployments, this is a configuration outcome rather than a fundamental or universally applicable drawback of introducing NFV into a design.
- D. NFV does not require OpenFlow; OpenFlow is a southbound SDN protocol independent of NFV, which can be deployed with or without SDN control plane protocols.
Concept tested. NFV infrastructure requirements and orchestration drawbacks
Reference. https://www.etsi.org/technologies/nfv
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