Answer:d) VDI(Virtual desktop infrastructure)
Explanation: VDI(Virtual desktop infrastructure) is the infrastructure of the managing technology the virtual desktops.The central host is the devices that helps in the management of the these virtual devices/desktop. Hypervisor is required for virtualization of the server .It also provides security by providing data at the data center/hub.
Other options are incorrect because VPN(Virtual private network)small network connection in network environment with less security, Paas (platform as a service) is a cloud computing technology for users to develop application and Laas(Location as a service) helps in delivering the location.Thus , the correct option is option (d).
