Which of the following description of the PWE3 technology are correct? (Multiple choice)
A . The internal data services carried by PWE3 are visible to the core network.
B . PRE3 technology provides ATM, Ethernet, and TDM services with end-to-end virtual link emulation at the PS network boundary.
C . PWE3 technology belongs to the second layer VLL solution
D . For PE3 emulation of Ethernet services, PW control words can be manually configured on the P
Answer: BCD