JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 13

Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)

Answer options

• A. With STP, a designated port can transition to the forwarding state without waiting for the protocol times to expire.
• B. STP uses point-to-point and edge port designations.
• C. With RSTP, a designated port can transition to the forwarding state without waiting for the protocol times to expire.
• D. RSTP uses point-to-point and edge port designations.

Correct answer: C, D

Explanation

Option C is correct because RSTP allows a designated port to move to the forwarding state instantly, bypassing waiting times. Option D is also correct as RSTP incorporates point-to-point and edge port designations, enhancing its efficiency. Options A and B are incorrect as they pertain to STP, which does not have the same capabilities as RSTP in this context.