JNCIP-DC: Juniper Networks Certified Professional – Data Center — Question 10

Which three statements about VSTP are correct? (Choose three.)

Answer options

• A. Separate BPDUs are flooded for each VSTP enabled VLAN.
• B. VSTP is incompatible with RSTP.
• C. VSTP is enabled by default on EX Series switches.
• D. VSTP supports up to 253 unique spanning tree topologies.
• E. A separate spanning tree instance is generated for each VLAN.

Correct answer: A, C, D

Explanation

Option A is correct because VSTP indeed floods separate BPDUs for each VLAN. Option C is accurate as VSTP is enabled by default on EX Series switches. Option D is true because VSTP allows for up to 253 unique spanning tree topologies. Options B and E are incorrect as VSTP can coexist with RSTP and does not generate a separate spanning tree instance for each VLAN when VSTP is used.