多选题What are three examples of a provider-provisioned VPN supported by JUNOS software？（）AL2FBPPTPCCircuit cross-connectDDraft-Martini-based VPNsEDraft-Kompella-based VPNs
题目
多选题
What are three examples of a provider-provisioned VPN supported by JUNOS software？（）
A
L2F
B
PPTP
C
Circuit cross-connect
D
Draft-Martini-based VPNs
E
Draft-Kompella-based VPNs