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Nokia Exam BL0-220 Topic 1 Question 5 Discussion

Actual exam question for Nokia's BL0-220 exam
Question #: 5
Topic #: 1
[All BL0-220 Questions]

Which of the following best describes the networking concept of "Underlay"?

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Suggested Answer: A

The networking concept of ''Underlay'' refers to the physical network layer that provides the connectivity and transport for the overlay network, which is the virtual network layer that runs on top of the underlay network1.The underlay network is composed of routers, switches, links, and protocols that enable the data transmission between different locations2.The underlay network is independent of the overlay network, meaning that it does not need to be aware of the network configuration, policies, or services of the overlay network3.Therefore, option A best describes the underlay network, while options B, C, and D are incorrect.Reference:1:Nokia Bell Labs Distributed Cloud Networks, Unit 2: Cloud Technologies and Features, Topic: Underlay and Overlay Networks2:Module by Module - Self Study Note Guide, DC2.2-- Cloud Options3:Underlay Network - an overview | ScienceDirect Topics, Overview


by Kerry at Mar 08, 2024, 03:33 AM

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Queen
6 months ago
I think the answer is A as well. The underlay is indeed the physical network layer that provides the foundation for overlay networks.
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Stefania
6 months ago
I'm not sure about the answer. Can someone explain their rationale?
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Ludivina
6 months ago
I disagree. I believe the answer is B) It's the virtual network layer.
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Chaya
8 months ago
I think the answer is A) It's the physical network layer.
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