JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 46

In RSTP, which three port roles are associated with the discarding state? (Choose three.)

Answer options

• A. root
• B. backup
• C. alternate
• D. disabled
• E. designated

Correct answer: B, C, D

Explanation

The correct roles associated with the discarding state in RSTP are backup, alternate, and disabled. The backup port is a potential alternative for forwarding traffic, while the alternate port provides a backup path to the root. The disabled port is not operational. Conversely, the root and designated ports are in forwarding or learning states and are not associated with discarding.