Which two of the following are the major concerns of a desktop application manager who deploys Cisco solution? (Choose Two.)

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A.
Integration with existing systems such as ERP or CRM (Choose Two)

B.
Missing Cisco knowledge of the desktop application managers

C.
huge employee training efforts while rolling out new collaboration service from Cisco

D.
security issues of the Cisco Collaboration applications

E.
how connect a Cisco Collaboration Architecture to existing database