Which two Any Transport over MPLS (AToM) traffic encapsulations require the use of a control
word? (Choose two)

A.
HDLC

B.
ATM AAL5

C.
PPP

D.
Ethernet VLAN

E.
Frame Relay

Explanation:
Reference: http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fsatoma.html