What is the maximum number of Cisco Unity Connection locations connected in a HTTPS network?

Refer to the exhibit. Cisco UCM is integrated with Cisco Unity connection via a SIP truck and is configured using a globalized dial plan (directory number are configured with “*”). Using cisco best practices, which implementation allows call transfers to internal directory numbers but not to PSTN numbers?
Refer to the exhibit.

Persistent Chat is configured in the Cisco IM and Presence server using PostgreSQL as the back-end database. Users report that the Chat Rooms icon is missing from their Cisco Jabber clients. Which action should the administrator take to resolve this issue?
Collaboration engineer is troubleshooting an issue with Cisco Jabber for Windows clients Users report that they receive the error message "cannot find your services automatically. All users on the collaborate network with an on-premises Cisco IM and Presence server report this issue. Which action resolves the issue?
An engineer is configuring a remote Cisco IM and Presence Service and needs to ensure that users can communicate across clusters in the same domain and receive presence status. Which protocol should be used to accomplish this task?
Which entity is a standard component used for authentication by SAML 2.0?
An administrator is configuring Cisco Unity Connection call handlers The administrator wants to ensure that all outside callers are played a welcome message and then are transferred to a live operator The administrator wants to restrict the callers from interrupting the welcome message with key presses Under which call handler menu is this task accomplished?
In Digital Network Cisco Unity Connection clusters, each site transmits and receives messages for the recipients based on which protocol?
An administrator is configuring call handlers in Cisco Unity Connection. The administrator must ensure that internal extensions are restricted so that callers must go through the company operator to reach employees, and so that callers hear an error message if they attempt to dial extensions directly. Which setting is configured to accomplish this task?

Refer to the exhibit. An engineer must configure Cisco IM and Presence server high availability so that the publisher node fails over to the subscriber node if the publisher node becomes unavailable On the Presence Redundancy Group Configuration page the engineer receives this message ‘High availability is not enabled for this cluster " Which two actions must the engineer perform to resolve the issue? (Choose two.)