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Which statement about data cente

题目

Which statement about data center access layer design modes is correct?（）

  • A、The access layer is the first oversubscription point in a data center design.
  • B、When using a Layer 2 loop-free design, VLANs are extended into the aggregation layer.
  • C、When using a Layer 2 looped design, VLANs are not extended into the aggregation layer.
  • D、When using a Layer 3 design,stateful services requiring Layer 2 connectivity are provisioned from the aggregation layer.
  • E、The data center access layer provides the physical-level connections to the server resources and only operates at Layer 3.
参考答案和解析
正确答案:A
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