多项选择题 Refer to Topic TestKing.com in iPAD document.Which ports on TestKing3 are operating as trunks?（）

单项选择题 Refer to Topic TestKing.com in iPAD document.To which port of TestKing3 is router VLAN-R1 connected?（）

单项选择题 Refer to Topic TestKing.com in iPAD document.What interface did Sw-AC3 associate with source MAC address 0010.5a0c.ffba?（）