Whichof the following are valid modes of packet switching on most routers？（Choose all thatapply.）（）

A.Fault management
B.Accounting management
C.Operations management
D.Performance management
E.Security management
F.Configuration management

A.sh ip route
B.sh ip cef 〈ip_address〉
C.sh adjacency 〈ip_address〉
D.sh ip route 〈ip_addres$〉
E.sh ip adjacency 〈/p_address〉
F.sh ip cef 〈mac_addrQss〉〈ip_address〉