With the development of ASIC technology, MPLS no longer has obvious advantages in improving the forwarding speed, but why MPLS still widely used for the following reasons? (Multiple choice)
A . MPLS combines the powerful Layer 3 routing function of the IP network with the efficient forwarding mechanism of the traditional Layer 2 network.
B . MPLS supports multi-layer tags and connection oriented.
C . Traffic Engineering, Virtual Private Network, Quality of Service applications provide better solutions.
D . MPLS is not easy to achieve seamless integration of IP and ATM, frame relay and other Layer 2 networks.
Answer: ABC