Exam 350-801 topic 1 question 305 discussion

The Cisco XCP Text Conference Manager supports the Chat feature. The Chat feature allows users to communicate with each other in online chat rooms. It supports chat functionality using ad hoc (temporary) and permanent chat rooms, which remain on a Cisco-supported external database until they are deleted.

The service on the Presence Server responsible for maintaining the point-to-point chat connections between Jabber clients is the Cisco XCP Router. It is a core component of the Cisco Unified Communications system and provides routing and delivery of instant messages, presence updates, and other real-time communication data between clients. The Cisco XCP Router is responsible for ensuring that messages are delivered reliably and efficiently to their intended recipients and for maintaining the connection between the clients during the chat session.

For SIP to SIP instant messaging, the following services must be running on IM and Presence Service: Cisco SIP Proxy Cisco Presence Engine Cisco XCP Router For SIP to XMPP instant messaging, the following services must be running on IM and Presence Service: Cisco SIP Proxy Cisco Presence Engine Cisco XCP Router Cisco XCP Text Conference Manager A and B Is correct

hard one but think i go for B What is Cisco XCP Text Conference Manager? and a is What is an XCP router? The XCP router consists of a wrapper class that holds virtual queues for XCP, TCP and OTHER traffic flows. OTHER flow maybe anything other than XCP and TCP The Cisco XCP Text Conference Manager supports the Chat feature. The Chat feature allows users to communicate with each other in online chat rooms. It supports chat functionality using ad hoc (temporary) and permanent chat rooms, which remain on a Cisco-supported external database until they are deleted.

It is A, see below

The question asks who maintains the point-to-point communication ..."it routes XMPP data to the other active XCP services on IM and Presence Service, and it accesses SDNS to allow the system to route XMPP data to IM and Presence Service users. The XCP router manages XMPP sessions for users, and routes XMPP messages to and from these sessions."... https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/service/10_0_1/admin/CUCM_BK_CDDBCDEB_00_cisco-unified-servicability-merge-100/CUCM_BK_CDDBCDEB_00_cisco-unified-servicability-merge-100_chapter_0101.html#CUCM_RF_C1541552_00

A is correct. This question is about the connection (provided by A) and not about the functionality (provided by B)

Answer is B not D, XMPP federation supports interdomain federation with third party enterprises, not p2p chat.

B https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/service/10_0_1/admin/CUCM_BK_CDDBCDEB_00_cisco-unified-servicability-merge-100/CUCM_BK_CDDBCDEB_00_cisco-unified-servicability-merge-100_chapter_0101.html#CUCM_RF_C1541552_00