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 compatible 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
Explanation:
The phrase “upgrade to the latest version possible” is key here.
First, we need to know that vDS 5.5 is not compatible with ESXi 5.1 and previous.
https://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.networking.doc%2FGUID-330A0689-574A-4589-9462-14CA03F3F2F4.html
So, A. is definitely incorrect.
D. is incorrect because what do “host switches” (standard vswitches?) have to do with vDS?
B. is one correct answer because the ESXi 5.1 hosts are upgraded to a compatible level
C. is the other correct answer because, if the admin can’t upgrade the ESXi 5.1 hosts then vDS 5.1 is the “latest version possible”
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Just make sure the VDS and the host are the same version
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0