A.DHCP OFFER

B.DHCP ACK

C.DHCP DISCOVER

D.DHCP REQUEST

A.02E0-FCFF-FEEF-OFEC

B.OOEO-FCFF-FFFE-OFEC

C.OOEO-FCEF-FFFE-OFEC

D.00E0-FCFF-FEEF-OFEC

A.Pre shows the priority of this routing protocol

B.NextHop shows the local interface address of this route

C.Proto shows to learn the routing protocol of this route

D.Destination/Mask shows the address and mask length of the destination network/host

A.After the NCP negotiation is successful, the PPP link will remain in communication and enter the Terminate phase.

B.During the Establish phase, the PPP link negotiates LCP parameters. Negotiation content includes maximum receiving unit MRU, authentication method, magic Word options

C.During the Network phase, the PPP link performs NCP negotiation. Select and configure a network layer protocol through NCP negotiation, and conduct network Network parameter negotiation

D.The Dead phase is also called the physical layer unavailability phase. When both ends of the communication side detect physical line activation, they will migrate from the Dead phase.
To the Establish phase

E.PPP link supports half-duplex and full-duplex modes

A.MAN

B.Backbone

C.Access Network

D.Core