What is a benefit of vCenter Linked-Mode?
A.
Allows the vCenter Server Virtual Appliance (vCSA) to manage multiple sites
B.
Pools vRAM entitlement
C.
Increases vCenter security
D.
Increases vCenter reliability
Explanation:
http://pubs.vmware.com/vsphere-50/index.jsp?topic=%2Fcom.vmware.vsphere.vcenterhost.doc_50%2FGUID-EC40636E-0DD4-4A17-B163-5CFBDC31666C.html
A good video to help understand this:
https://www.youtube.com/watch?v=pamN6UWlu5E