az-900 Practice Question 157

Exam: az-900
Domain: Describe Azure architecture and services
Topic: Describe Azure compute and networking services
Difficulty: medium
At which OSI layer does ExpressRoute operate?

Answer Options

A
Layer 2
B
Layer 3
C
Layer 5
D
Layer 7

Correct Answer

A: Layer 2

Explanation

The correct answer is Layer 2. It best satisfies the requirement described in the question and matches the Describe Azure compute and networking services concept being tested.
Reference: https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/hybrid-networking/expressroute; https://learn.microsoft.com/en-us/azure/expressroute/expressroute-introduction#key-benefits; https://learn.microsoft.com/en-us/azure/expressroute/expressroute-introduction; https://learn.microsoft.com/en-us/azure/architecture/reference-architectures/hybrid-; https://learn.microsoft.com/en-us/azure/expressroute/expressroute-introduction#features

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