Which of the following Cisco Unity Connection services can be deactivated only by using the CLI?

A.
Connection Message Transfer Agent

B.
Connection DB

C.
Connection DB Event Publisher

D.
Connection Database Proxy

Explanation:
Of the available choices, the Connection DB service can be deactivated only by using the command-line
interface (CLI). Connection DB is a status-only service that starts the Unity Connection database. Many Cisco
Unity Connection services, including base services and critical services, can be managed from the Control
Center in Cisco Unity Connection Serviceability. However, some status-only services, including Connection DB,
Connection Server Role Manager, and Connection Serviceability, cannot be managed from the Control Center
and can be deactivated only from a command-line interface (CLI).
The Connection Message Transfer Agent can be deactivated from Cisco Unity Connection Serviceability
Control Center. However, deactivating Connection Message Transfer Agent will cause voice mail messages to
not be delivered. The Connection Message Transfer Agent is a critical Unity Connection service that enables
voice mail messages to be delivered to the message store. Although Unity Connection will operate without this
service, voice mail messages cannot be delivered without it.
The Connection DB Event Publisher service can be deactivated from Cisco Unity Connection Serviceability
Control Center. Connection DB Event Publisher is a Cisco Unity Connection base service that notifies
components of changes to the Unity Connection database. Deactivating this service could cause some Unity
Connection components to operate with out-of-date data.The Connection Database Proxy service can be deactivated from Cisco Unity Connection Serviceability Control
Center. Connection Database Proxy enables non-Unity Connection tools, such as Cisco Unified Backup and
Restore Application Suite (COBRAS) to communicate with the Cisco Unity Connection database by using a
Windows Open Database Connectivity (ODBC) connection. The Connection Database Proxy service is
disabled by default.

Cisco: Managing Services in Cisco Unity Connection 10.x (PDF)