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
Answer: B, C, D
Explanation:
How To Configure Frame Relay Subinterfaces
http://www.orbit-computer-solutions.com/How-To-Configure-Frame-Relay-Subinterfaces.php
Step to configure Frame Relay subinterfaces on a physical interface: