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單項(xiàng)選擇題

Refer to the exhibit. PCs in VLAN 2 are not able to communicate with PCs in VLAN 3.
 What could  be the cause?()

A. IP routing is not enabled.
B. VTP is not configured correctly on the interfaces.
C. The command mls rp management-interface is missing.
D. The command mls rp ip must be disabled to enable the routing.

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