Refer to the exhibit. Which recommended practice is applicable？（）
A. If no core layer is deployed， the design will be easier to scale
B. A dedicated campus core layer should be deployed for connecting three or more buildings
C. If no core layer is deployed， the distribution switches should not be fully meshed
D. A dedicated campus core layer is not needed for connecting fewer than five buildings
剩余贡献毛益等于（）。
A. 利润
B. 单位贡献毛益-专属固定成本
C. 收入-变动成本
D. 贡献毛益总额-专属固定成本
采用成本法核算长期股权投资时，当被投资企业宣告分派现金股利、投资企业对应分得的金额，会计上应（）。
A. 贷记“应收股利”
B. 贷记“投资收益”
C. 贷记“银行存款”
D. 借记“长期股权投资”
he requirement for high availability within the Data Center network may cause the designer toconsider which one of the following solutions？（）
A. Construct a hierarchical network design using EtherChannel between a server and two VDCsfrom the same physical switch
B. Utilize Cisco NSF with SSO to provide intrachassis SSO at Layers 2 to 4
C. Define the Data Center as an OSPF NSSA area， advertising a default route into the DC And summarizing the routes out of the NSSA to the Campus Core
D. Implement network services for the Data Center as a separate services layer usingactive/active model that is more predictable in failure conditions
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