A.a primary route,stored in the routing table
B.a backup route,stored in the routingt able
C.a backup route,stored in the topology table
D.A primary route,stored in the topology table
A.應(yīng)用層
B.表示層
C.會話層
D.傳輸層
E.網(wǎng)絡(luò)層
F.鏈路層
G.物理層