MSTP solves a lot of defects of RSTP and STP single spanning tree. As for the description of MSTP, the correct ones are:
A . Each MST instance uses a separate STP algorithm to compute a separate spanning tree.
B . Each MST Instance has an identifier (MSTID), and the MSTID is a one-byte integer.
C . By default, all VLANs are mapped to MST Instance 1.
D . MSTP allows one or more VLANs to be mapped to an MST instance. MSTP calculates the root switch for each MST instance and sets the port status.
Answer: D