Which three statements about RSTP are true? (Choose three.)

Question

Options

• ARSTP significantly reduces topology converging time after a link failure.
• BRSTP expands the STP port roles by adding the alternate and backup roles.
• CRSTP port states are blocking, discarding, learning, or forwarding.
• DRSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
• ERSTP also uses the STP proposal-agreement sequence.
• FRSTP uses the same timer-based process as STP on point-to-point links.

• A
  88% (49)
• C
  4% (2)
• E
  2% (1)
• F
  7% (4)

Explanation

Answer A is true: RSTP dramatically reduces convergence time from 30–50 seconds (classic STP) to near-instantaneous (under 1 second in ideal conditions) after a link failure. Answer B is true: RSTP adds the Alternate port role (backup path to root) and Backup port role (redundant path to a segment) to the original STP roles of root and designated. Answer D is true: RSTP uses a rapid proposal-agreement handshake mechanism on point-to-point links to transition ports to forwarding almost immediately, bypassing timer-based delays. Answer C is false - RSTP port states are discarding, learning, and forwarding (not 'blocking'). Answer E is false - it is RSTP that introduces the proposal-agreement sequence, not legacy STP. Answer F is false - RSTP specifically eliminates the timer-based process on point-to-point links.

No community discussion yet for this question.