An administrator is upgrading a vSphere

Distributed Switch. The existing switch is version 5.0 and the administrator wants to upgrade to the latest version possible. The environment contains several ESXi 5.1 hosts.

Which two options are available to ensure that the upgraded switch will be compa

tible with these hosts? (Choose two.)

A. Upgrade the vSphere Distributed Switch to 5.5

B. Upgrade the ESXi 5.1 hosts to version 5.5, then upgrade the vSphere Distributed Switch to 5.5

C. Upgrade the vSphere Distributed Switch to 5.1

D. Upgrade the ESXi

host switches to 5.5, then upgrade the vSphere Distributed Switch to 5.5