单项选择题 Refer to the exhibit. A trunk link is connected between switch A_SW and switch D_SW. Based on  the configuration shown in the exhibit，  how would the traffic coming from the switch A_SW be  managed？ （）

单项选择题 Refer to the exhibit.  Which statement is true when voice traffic is forwarded on the same VLAN  used by the data traffic？ （）

单项选择题 Refer to the exhibit.  Why does the trust state of interface FastEthernet 0/3 show "not trusted"？  （）