Device Management Protocol (DMP) is a protocol used between ICM Central Controller and IVR/CUCM PGs. It is used to send commands, such as to bring up a voice channel, to the PGs. OCTI, SIP, and ccagent are not protocols used between ICM Central Controller and IVR/CUCM PGs.

A CTI route point is a configuration object in Cisco Unified Communications Manager (CUCM) that enables end-to-end reporting and tracking of call transfers. When an agent transfers a call to another ICM Skill Group, it should be transferred to a CTI route point in order to maintain the end-to-end reporting context. Route patterns and translation patterns are used to route calls in CUCM, while an agent IP phone is the physical device used by an agent to access the ICM Skill Group.

Explanation
The service that must be restarted after modifying the Java Keystore on the CVP servers is the Cisco CVP WebServicesManager. The Cisco CVP WebServicesManager is a service that provides web services for the CVP components, such as the Operations Console, the Reporting Server, and the Call Server. The Java Keystore is a file that stores the certificates and keys for secure communication between the CVP components and other systems. If the Java Keystore is modified, the Cisco CVP WebServicesManager service must be restarted to apply the changes and ensure the proper functioning of the web services12.
References:
Configure Secure Java Management Extensions (JMX) Communication on CVP3 User Guide for Cisco Unified CVP VXML Server and Cisco Unified Call Studio Release 11.5 (1) - Rest_Client Integration2