Where is the extended VLAN configuration stored?

A. In the vlan.dat file
B. In the running-config
C. In the VLAN database
D. In the startup-config

D. The extended VLAN database will be stored in the startup-config. Only normal VLANs are stored in the VLAN database (vlan.dat). When configuring extended VLANs, you must have the switch in VTP transparent mode.