This one is exactly the same as the VCAP4-DCA objective so it is all about reviewing it all and making sure you understand what each part does and how to do it. Personally i think this is another one you just need to practice doing in your lab and watch the videos to refresh your understanding.
Configure and Maintain VLANs, PVLANs and VLAN Settings
- Identify types of VLANs and PVLANs
Using the vSphere Distributed Virtual Switch (dvswitch) lesson from the VMware vSphere 5 Training course from Trainsignal
Skills and Abilities
- Determine use cases for and configure VLAN Trunking
http://kb.vmware.com/kb/1004252 VLAN trunking example and reasons of why you would do/use it
- Determine use cases for and configure PVLANs
http://kb.vmware.com/kb/1010691This gives a great overview of PVLANS and what each setting would be used for.
- Use command line tools to troubleshoot and identify VLAN configurations
Covered in Objective 2.1 and will be covered better in Objective 6
Chris Wahl has done a brilliant overview of Private VLANS in his blog posting Understanding vSphere Private VLANs For Fun and Profit and also did a brilliant breakdown of the whole objective in the vBrownbag he did which i would highly recommend