Which protocol is standard for tagged VLANs over trunks A VL

Which protocol is standard for tagged VLANs over trunks?

A. VLAN Trunking Protocol

B. 802.1D

C. Dynamic Trunking Protocol (DTP)

D. 802.1Q

E. None of the above

Solution

D is correct. IEEE 802.1Q defines tagged VLANs for trunking.

A, B, and C are incorrect. A is incorrect because VTP is a Cisco protocol for advertising and extending VLANs throughout an entire organization. B is incorrect because 802.1 defines untagged VLANs. C is incorrect because DTP (Dynamic Trunking Protocol) is a Cisco protocol to help the ends of a link negotiate trunking. E is incorrect because this choice is not valid.