An existing vSphere 4 environment will be upgraded to vSphere 5.x. The current implementation
utilizes ESXi 4.1 and the new implementation will use ESXi 5.x.
In which two ways will the new ESXi 5.x implementation differ from the ESXi 4.1 implementation?
(Choose two.)
A.
VMware ESXi 5.x provides a host-based firewall.
B.
VMware ESXi 5.x can boot from additional local sources such as a USB drive.
C.
VMware ESXi 5.x can be managed from a web browser.
D.
VMware ESXi 5.x can support virtual machines with larger hard drive configurations.
ESXi 4.1 allowed install to USB drives
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1010574
Also, although web management has been available, it was considered experimental before 5.0
Poorly worded B. But still B+D
http://www.virtualizetips.com/2011/07/whats-new-in-vmware-vsphere-esxi-5/