Which two loopback types are supported for serial interfaces on Juniper devices? (Choose two.)
A.
Local
B.
Far End
C.
Remote
D.
Bidirectional
Explanation:
For serial interfaces Juniper devices support the local and the remote loopback types.
http://www.juniper.net/documentation/en_US/junos12.3/topics/usage-guidelines/interfacesinterface-diagnostics.html