Which two statements are true regarding vSphere standard switches? (Choose two.)
A.
Beaconing requires at least three uplinks to be considered useful.
B.
Virtual machines on different vSwitches require the vSwitches to share an uplink to communicate.
C.
vSphere virtual switches require at least one uplink adapter.
D.
Setting the number of ports to the maximum on a vSwitch will exhaust the total ports on a host.
question about D.
Many vswitches can be on a host, how can a vsw port numbers be total ports on a host?
should be B and D
I am with you .. every time I come a cross this question I choose B !
B is not possible since you can’t share same uplink to different vSwitch, but you can have multiple uplink connected to same vSwitch. So B is not correct.
I though it (share) to have a link .. but shoudn’t be the same link of course !
A is good fore sure
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1005577
Can’t find information about D
About option D:
The answer can be found under maximum configurations documentation:
http://www.vmware.com/pdf/vsphere5/r51/vsphere-51-configuration-maximums.pdf on page 2:
Total virtual network switch ports per host (VDS and VSS ports) = 4096
Virtual network switch creation ports per standard switch = 4088
If I base on those two lines i understand option D is incorrect as there will be 4096 – 4088 = 8 ports available for the host.
What do you think?
B is INCORRECT because different vSwitchs cannot share the same uplink
A good way to test this is in your Production environment build out a new vSS and then add a VMNIC from another VSS (preferably one that does not have standby or fail-over)..
Correct Answers: A C.
A is correct – Beaconing requires at least 3 uplink ports to perform correctly.
C is correct – A vSwitch needs to be connected to at least one physical uplink port – you cannot create a vSwitch without assigning an uplink port for it to use.
B is incorrect as you cannot share uplink ports between different vSwitches.
D is incorrect as the default number of ports assign to a vSwitch is 128. The number of vSwitch ports has nothing to do with the number of physical ports you have on your host..