Implementing Cisco IP Switched Networks (CCNP SWITCH, legacy) — Question 53

In which two ways are IEEE STP BPDUs forwarded if VLAN 99 is configured as native? (Choose two)

Answer options

• A. VLAN 1 STP BPDUs are sent tagged on VLAN 1
• B. VLAN 1 STP BPDUs are sent tagged on VLAN 99
• C. VLAN 1 and VLAN 99 BPDUs are sent tagged on VLAN 1
• D. VLAN 1 STP BPDUs are sent untagged on VLAN 1
• E. VLAN 1 STP BPDUs are sent untagged on VLAN 99

Correct answer: A, E

Explanation

The correct answers, A and E, indicate that BPDUs for VLAN 1 are sent tagged on VLAN 1 and untagged on the native VLAN, which is VLAN 99. Options B and C are incorrect because they suggest incorrect tagging for VLAN 1 BPDUs, and option D misrepresents the tagging behavior on VLAN 1 for BPDUs.