Nanxi wants to switch from using roaming profiles in the organization. After evaluating various alternatives, she decides to proceed with UE$-$V because it offers several advanced functionalities that are not offered by roaming profiles.

Which of the following is an example of such functionality?

a$.$ Synchronization is based on templates for fine$-$grained control of specific application settings.

b$.$ Certificates can be synchronized to user profiles by storing them in Active Directory.

c$.$ Synchronization can be performed across multiple operating devices using the same operating system.

d$.$ Settings are synchronized at sign$-$in or sign$-$out rather than while the user is signed in$.$