單項選擇題

Enabling jumbo frame support on a Cisco Nexus 5500 Switch can be done through which method?()   

A. changing the default policy map from a default MTU of 1500 to 9216
B. using the command system jumbomtu 9216
C. using the command interface MTU 9216
D. configuring the default Ethernet system class to an MTU of 9216 with a new network QoS policy map

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