It has become necessary to configure an existing serial interface to accept a second Frame Relay
virtual circuit. Which of the following are required to solve this? (Choose three)

A.
configure static frame relay map entries for each subinterface network.

B.
remove the ip address from the physical interface

C.
create the virtual interfaces with the interface command

D.
configure each subinterface with its own IP address

E.
disable split horizon to prevent routing loops between the subinterface networks

F.
encapsulate the physical interface with multipoint PPP

Explanation:
How To Configure Frame Relay Subinterfaces http://www.orbit-computer-solutions.com/How-ToConfigure-Frame-Relay-Subinterfaces.php
Step to configure Frame Relay subinterfaces on a physical interface:
Remove any network layer address (IP) assigned to the physical interface. If the physical interface
has an address, frames are not received by the local subinterfaces.
Configure Frame Relay encapsulation on the physical interface using the encapsulation frame-relay
command.
For each of the defined PVCs, create a logical subinterface. Specify the port number, followed by a
period (.) and the subinterface number. To make troubleshooting easier, it is suggested that the
subinterface number matches the DLCI number.
Configure an IP address for the interface and set the bandwidth.

Configure the local DLCI on the subinterface using the frame-relay interface-dlci command.
Configuration Example: R1>enable R1#configure terminal R1(config)#interface serial 0/0/0
R1(config-if)#no ip address R1(config-if)#encapsulation frame-relay R1(config-if)#no shutdown
R1(config-if)#exit R1(config-subif)#interface serial 0/0/0.102 point-to-point R1(config-subif)#ip
address 192.168.1.245 255.255.255.252 R1(config-subif)#frame-relay interface-dlci 102 R1(configsubif)#end R1#copy running-config startup-config