MSTP solves many shortcomings of the single spanning tree of RSTP and STP. Regarding the MSTP, which of the following description is correct?
A . Each MST INSTANCE uses a separate STP algorithm to calculate a separate spanning tree
B . Each MST INSTANCE has an identifier, MSTID is a one-byte integer
C . All VLANs are mapped to MST INSTANCE 1 by default
D . MSTP allows one or more VLANs to be mapped to a MST instance, MSTP calculates the root switch separately for each MST INSTANCE, and sets the port status separately
Answer: D