A network administrator needs to configure a serial link between the main office and a remote
location. The router at the remote office is a non-Cisco router. How should the network
administrator configure the serial interface of the main office router to make the connection?
A.
Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# no shut
B.
Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation ppp
Main(config-if)# no shut
C.
Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation frame-relay
Main(config-if)# authentication chap
Main(config-if)# no shut
D.
Main(config)# interface serial 0/0
Main(config-if)#ip address 172.16.1.1 255.255.255.252
Main(config-if)#encapsulation ietf
Main(config-if)# no shut
Explanation:
hdlc is the default encapsulation on cisco routers. when connecting non-cisco routers you should use PPP.
With the basic IP configuration out of the way, you then implement the serial link protocol or encapsulation protocol. You can choose from either High-Level Data Link Control (HDLC) or Point to Point Protocol (PPP), which are encapsulation protocols used to format data to send across the wire.