Well, this page will act as an index to the whole VCAP4-DCA posts and informations.

VCAP4-DCA index (base on exam blueprint of course):

Section 1 – Implement and Manage Storage
Objective 1.1 – Implement and Manage Complex Storage Solutions
Objective 1.2 – Manage Storage Capacity in a vSphere Environment
Objective 1.3 – Configure and Manage Complex Multipathing and PSA Plug-ins

Section 2 – Implement and Manage Networking
Objective 2.1 – Implement and Manage Complex Virtual Networks
Objective 2.2 – Configure and Maintain VLANs, PVLANs and VLAN Settings
Objective 2.3 – Deploy and Maintain Scalable Virtual Networking
Objective 2.4 – Administer vNetwork Distributed Switch Settings

Section 3 – Deploy DRS Clusters and Manage Performance
Objective 3.1 – Tune and Optimize vSphere Performance
Objective 3.2 – Optimize Virtual Machine Resources
Objective 3.3 – Implement and Maintain Complex DRS Solutions
Objective 3.4 – Perform Capacity Planning in a vSphere Environment
Objective 3.5 – Utilize Advanced vSphere Performance Monitoring Tools

Section 4 – Manage Business Continuity and Protect Data
Objective 4.1 – Implement and Maintain Complex VMware HA Solutions
Objective 4.2 – Deploy and Test VMware FT
Objective 4.3 – Configure a vSphere Environment to support MSCS Clustering
Objective 4.4 – Deploy and Maintain vCenter Server Heartbeat

Section 5 – Perform Operational Maintenance
Objective 5.1 – Implement and Maintain Host Profiles
Objective 5.2 – Deploy and Manage Complex Update Manager Environments

Section 6 – Perform Advanced Troubleshooting
Objective 6.1 – Configure, Manage and Analyze vSphere Log Files
Objective 6.2 – Troubleshoot CPU and Memory Performance
Objective 6.3 – Troubleshoot Network Performance and Connectivity
Objective 6.4 – Troubleshoot Storage Performance and Connectivity
Objective 6.4 – Troubleshoot vCenter Server and ESX/ESXi Host Management

Section 7 – Secure a vSphere Environment
Objective 7.1 – Secure ESX/ESXi Hosts
Objective 7.2 – Configure and Maintain the ESX Firewall
Objective 7.3 – Deploy and Administer vShield Zones

Section 8 – Perform Scripting and Automation
Objective 8.1 – Execute VMware Cmdlets and Customize Scripts Using PowerCLI
Objective 8.2 – Administer vCenter Orchestrator
Objective 8.3 – Administer vSphere Using the vSphere Management Assistant

Section 9 – Perform Advanced vSphere Installations and Configurations
Objective 9.1 – Install ESX Server with custom settings
Objective 9.2 – Plan and Execute Scripted Installations
Objective 9.3 – Configure vCenter Server Linked Mode

Here are great sources which I’m using or going to use:
VCAP4-DCA main page (link )
Exam Blueprint (link )
vFAIL.NET (link )
VCAP-DCA Landing Page by Kendrick Colmen (link )
vmwaretraining by Scott Vessey (link )
VCAP4-DCA Study Notes by Simon Long (link )