What are the two requirements for HA to work?

A.
Hosts need to have compatible CPU.

B.
Hosts need to have shared storage.

C.
Hosts should have a static IP address.

D.
You need 2 VMkernel Ports

Explanation:
I answered B & C, as A is only for a vMotion & D no point.
As far as I remember, this one seems to be close to a VCP 4 question.
http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-availability-guide.pdf
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