Which statement about VLAN configuration is true?
Sure, I'd be happy to explain VLAN configuration and the correctness of each statement.
A VLAN (Virtual Local Area Network) is a logical grouping of network devices that are logically grouped together, even if they are physically spread out. VLANs provide a way to segment a network and control network traffic flow. A switch is the most common device used to create VLANs.
Now, let's go through each statement:
A. The switch must be in VTP server or transparent mode before you can configure a VLAN
This statement is true. VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol that allows switches to exchange VLAN information with other switches in the same VTP domain. To configure VLANs, the switch must be in VTP server or transparent mode. VTP client mode does not allow you to configure VLANs.
B. The switch must be in config-vlan mode before you configure an extended VLAN
This statement is false. To configure an extended VLAN (VLAN IDs greater than 1005), you need to be in global configuration mode, not config-vlan mode. Config-vlan mode is used to configure VLANs and assign ports to VLANs.
C. Dynamic inter-VLAN routing is supported on VLAN2 through VLAN 4064
This statement is false. Inter-VLAN routing allows traffic to be routed between VLANs. It is supported on all VLANs, not just VLAN2 through VLAN 4064.
D. A switch in VTP transparent mode save the VLAN databases to the running configuration only.
This statement is false. A switch in VTP transparent mode does not participate in VTP domain advertisement or synchronization. It forwards VTP advertisements but does not process them. The VLAN database is stored in NVRAM and is not affected by a reboot of the switch. Therefore, it is saved to both the running and startup configurations.
I hope this helps! Let me know if you have any more questions.