ICND2: Interconnecting Cisco Networking Devices Part 2 (legacy) — Question 69

Which IEEE standard does PVST+ use to tunnel information?

Answer options

• A. 802.1x
• B. 802.1q
• C. 802.1w
• D. 802.1s

Correct answer: B

Explanation

The correct answer is B, 802.1q, as it defines the VLAN tagging method used by PVST+ to encapsulate trunking information. The other options, A (802.1x), C (802.1w), and D (802.1s), pertain to port-based network access control, rapid spanning tree protocol, and multiple spanning tree protocol, respectively, and are not related to the tunneling of information in PVST+.