Which two statements are true about STP and RSTP? (Choose two.)
A . STP uses a proposal-and-agreement handshake on point-to-point links instead of timers.
B . In RSTP, root ports and edge ports transition to the forwarding state immediately, without exchanging messages with other switches.
C . In RSTP, a TCN is generated when a port transitions to the discarding state.
D . In STP, the forwarding delay timer and maximum age timer define the convergence delay.
Answer: B,D