A customer needs to maximize Hyper-V Live Migration performance. What technology will meet the customer's requirement?

Question

Options

• Avirtual extensible LAN(VXLAN)
• BFibre Channel over Ethernet (FCoE)
• Cnetwork virtualization using generic routing encapsulation (NVGRE)
• DRDMA over Converged Ethernet (RoCE)

• A
  6% (4)
• B
  13% (9)
• C
  3% (2)
• D
  78% (53)

Explanation

RoCE enables Remote Direct Memory Access (RDMA) over standard Ethernet, allowing VM memory pages to transfer directly between host servers without CPU or OS kernel involvement - dramatically cutting latency and boosting throughput during Hyper-V Live Migration, which is fundamentally a memory-transfer operation.

Why the others are wrong:

• A (VXLAN): A Layer 2 overlay/tunneling protocol for scaling virtual networks across Layer 3 - solves network segmentation, not migration speed.
• B (FCoE): Carries Fibre Channel storage traffic over Ethernet - optimizes SAN I/O, not VM memory transfer.
• C (NVGRE): Microsoft's own network virtualization encapsulation (competitor to VXLAN) - also about virtual network isolation, not migration bandwidth.

Memory tip: Live Migration = moving RAM between hosts. RDMA = direct RAM-to-RAM transfer, bypassing the CPU. RoCE = RDMA on Ethernet. The word memory links all three - if the question is about migrating VMs fast, think "memory transfer" → RDMA → RoCE.

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