Which statement about VLAN configuration is true?
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Correct answer: The switch must be in VTP server or transparent mode before you can configure a VLAN.
Why this is the answer
To create, modify, or delete VLANs on a Cisco switch, the switch must be operating in either VTP server mode or VTP transparent mode. In VTP server mode, VLAN changes are propagated to other VTP clients in the same VTP domain. In VTP transparent mode, VLAN changes are local to the switch and are not advertised to other switches, nor does it process VTP advertisements from other switches. VTP client mode does not allow local VLAN configuration; it only accepts VLAN information from a VTP server. Extended VLANs (VLANs 1006-4094) can be configured in global configuration mode, not a special config-vlan mode. Inter-VLAN routing is typically static or uses routing protocols; "dynamic inter-VLAN routing" isn't a standard term for a specific feature. A switch in VTP transparent mode saves the VLAN database to both the running configuration and the startup configuration.
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