An engineer is configuring mobile and remote access. Which three configuration tasks should the engineer perform? (Choose three.)
A. Manually configure a Cisco Unified Communications Manager neighbor zone on the Cisco Expressway Core.
B. Add the Cisco Unified Communications Manager root certificate to the Cisco Expressway Core CTL.
C. Enable TLS verify mode for the traversal zone.
D. Add the Cisco Unified Communications domain before enabling services on the Cisco Expressway Core.
E. Enable H.323 on the Cisco Unified Communications Manager neighbor zone.
F. Add the Cisco Expressway Edge root certificate to the Cisco Unified Communications Manager CTL.
