WhichtwoseriesofCiscoCatalystswitches，whenplacedinthedistributionlayer，effectivelypasshighamountsofnetworktrafficbetweenthecoreandaccesslayerswhileaggregatingaccess？（）

A.CiscoCatalyst2800
B.CiscoCatalyst3550
C.CiscoCatalyst3750
D.CiscoCatalyst4500
E.CiscoCatalyst6500

【参考答案】

D, E