多项选择题WhichthreeCiscoCRS4.0componentsmustbeactiveonaCallRecordingexpansionserver?()
A.Cisco CRS Repository Datastore, Cisco CRS Historical Datastore, Cisco CRS Config Datastore, CiscoCRS Agent Datastore
B.Cisco Recording
C.Cisco CRS Engine
D.Cisco Monitoring
E.Cisco CRS Node Manager
F.Historical Reporting client