多选题Which three functions can CCC be used for？（）ATo interconnect VLANSBTo interconnect ATM VCsCTo interconnect MPLS LSPsDTo interconnect MPLS VPNs
题目
多选题
Which three functions can CCC be used for？（）
A
To interconnect VLANS
B
To interconnect ATM VCs
C
To interconnect MPLS LSPs
D
To interconnect MPLS VPNs