Microsoft Installation, Storage, And Compute With Windows Server 2016 (70-740) Practice Test

Which of the following is a device that functions at layer 2 of the OSI reference model, like its physical counterpart?

Router Virtual switch Hyper-V host NIC team

Correct Answer:

Virtual switch

Explanation:

Layer 2 devices switch Ethernet frames using MAC addresses, handling traffic between endpoints without involving IP routing. A virtual switch inside a Hyper-V host provides the same switching function for virtual machines as a physical switch does for physical NICs. It forwards frames between VM NICs and can connect to the external network through uplinks, all at the data link layer. A router operates at Layer 3, routing packets based on IP addresses rather than MAC addresses. A Hyper-V host is the computing platform that runs virtual machines, not a dedicated Layer 2 switch. NIC teaming is a method to aggregate multiple NICs for throughput or redundancy, but it’s not a separate switch-like device handling frame switching between endpoints.

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