An administrator is setting up vSAN file services on a vSAN cluster but is unable to join the vSAN File Services to the domain. Which two possible reasons could explain this failure? (Choose two.) 

An architect is working with an All-Flash vSAN configuration and will be using the Flash Caching Devices in vSAN. Which requirement is specifically needed for these devices? 

A customer has upgraded to vSAN 7, but there is still an existing legacy host which must be removed from the vSAN cluster. Which three steps must an administrator take to successfully remove this host from the vSAN cluster? (Choose three.) 

An administrator is tasked with setting up a disaster recovery solution on top of a standard vSAN cluster in the first site and a separate standard vSAN cluster in the secondary site. Costs are a constraint and should be kept to the absolute minimum. Which solution fits this use case best? 

An architect has been tasked to deliver a higher availability of the current deployed VMware vSAN Stretched Cluster infrastructure. The new design should incorporate three different sites that can run workloads in case of a failure. Which product should the architect add to the design to meet these requirements?