Which of the following is not a feature of Segment Routing?
A . Uses the source routing technology to provide fast interaction between the network and upper-layer applications.
B . Segment Routing is a connection-oriented technology that maintains the connection status.
C . By extending existing protocols (such as IGP), the existing network can be smoothly evolved.
D . In addition, the centralized control mode of the controller and the distribution control mode of the forwarder are supported, and the balance between centralized control and distributed control is provided.
Answer: D