JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 55

What are two characteristics of RSTP alternate ports? (Choose two.)

Answer options

• A. RSTP alternate ports block traffic while receiving superior BPDUs from a neighboring switch.
• B. RSTP alternate ports provide an alternate lower cost path to the root bridge.
• C. RSTP alternate ports provide an alternate higher cost path to the root bridge.
• D. RSTP alternate ports are active ports used to forward frames toward the root bridge.

Correct answer: A, C

Explanation

The correct answer is A and C because RSTP alternate ports do block traffic when they receive superior BPDUs and they provide alternate higher cost paths to the root bridge. Option B is incorrect as alternate ports are not meant to provide lower cost paths, and Option D is wrong since alternate ports do not forward frames but are in a blocking state.