Basically core questions, Customer logs in to WI, clicks on icon, no error no launch, what could it be? Explain concept of zone, and data collector, what is a data collector, how many should I have, what are the settings for the role, how is Citrix XenApp licensed now, what type of licenses are required (user CALS and RDS CALS), what port does license server listen on, what is the xml serivice, what is the default port on install, what user roles are available in XenDesktop, what rs Desktop Director, what role in XD is required for HD, what is session load balancing, what RAID level is recommened for XenDesktop 5.5 and why?