A.應用層B.數(shù)據(jù)鏈路層C.網(wǎng)絡層D.傳輸層
A.核心層 B.接入層 C.網(wǎng)絡層 D.物理層
A.vlan 1 B.vlan 100 C.vlan 1002 D.vlan 0