Many $\_\_\_\_\_\_\_\_$integrate with $\_\_\_\_\_\_\_\_$ or an LDAP$-$based system for authentication and authorization.a$.$NASs $($Network$-$Attached Storages$)$; Active Directoryb.SANs $($Storage Area Networks$)$; e$-$mail clientsc.CBSs $($Cloud$-$Based Storages$)$; file systemsd.FSCs $($File$-$Sharing Clients$)$; client operating systems