A template is being persistently pushed to the endpoint from TMS. This is because TMS, or Cisco TelePresence Management Suite, is a software application that enables centralized management of Cisco video conferencing and collaboration devices and systems. TMS can use templates to configure and update multiple endpoints with the same settings, such as alias information, network settings, security settings, and so on1. If a template is applied to an endpoint, any manual changes made to the endpoint will be overwritten by the template settings the next time the template is pushed by TMS2. Therefore, if an administrator notices that the alias information changes revert back to their original state the following day, it is most likely that a template is being persistently pushed to the endpoint from TMS.
The other options are not correct because:
* The changes are not being saved properly on the endpoint: This is not likely, as the changes are successful and visible on the endpoint until the next day. If the changes were not saved properly on the endpoint, they would not take effect at all or would be lost after a reboot or power cycle of the endpoint3.
* A template is being pushed persistently to the endpoint from the Expressway: This is not possible, as the Expressway does not support pushing templates to endpoints. The Expressway is a network device that provides firewall traversal, NAT, and encryption services for video communications. The Expressway does not have the capability to configure or update endpoints with templates.
* The alias information of the endpoint is duplicated on another endpoint: This is not relevant, as the alias information of the endpoint is not affected by the alias information of another endpoint. The alias information is a unique identifier for the endpoint that is used for registration and dialing purposes. The alias information of another endpoint does not overwrite or interfere with the alias information of the endpoint in question.
References := 1: Cisco TelePresence Management Suite Administrator Guide (15.16) - Templates [Cisco TelePresence Management Suite] - Cisco 2: Cisco TelePresence Management Suite Administrator Guide (15.16) - Applying Templates [Cisco TelePresence Management Suite] - Cisco 3: Cisco TelePresence Management Suite Administrator Guide (15.16) - Configuring Endpoints [Cisco TelePresence Management Suite] - Cisco : Cisco Expressway Basic Configuration Deployment Guide (X12.6) - Introduction [Cisco Expressway Series] - Cisco : Cisco Expressway Basic Configuration Deployment Guide (X12.6) - Registering Aliases [Cisco Expressway Series] - Cisco

= Transforms are a way of modifying the destination alias or address of a call before it is routed to the appropriate zone or service. Transforms can be applied at different stages of the call routing process, such as pre-search, search rules, or call policy. The Cisco recommended method to add a domain to a numeric E.164 alias dialed by an H.323 endpoint is to use a pre-search transform. A pre-search transform is applied to the destination alias before any searches are sent to external zones. This allows the Expressway to standardize the destination aliases originating from both H.323 and SIP devices. For example, if the called address is an H.
323 E.164 alias "01234", the Expressway can automatically append the configured domain name (in this case example.com) to the called address (that is, [email protected] making it into a URI), before attempting to set up the call. This way, the Expressway can route the call to the correct destination zone or service based on the full URI. References := Cisco Expressway-E and Expressway-C Basic Configuration Deployment Guide (X14.0) - Routing ConfigurationCisco Expressway Administrator Guide (X14.0) - Dial Plan and Call Processing

= To restrict the registration of endpoints based on their aliases, you can use the restriction policy feature on the Cisco Expressway. The restriction policy can be set to "Allow", "Deny", or "None". If you set it to
"Allow", you can specify a list of regular expressions that match the aliases of the endpoints that you want to allow. Any endpoint that does not match any of the expressions in the allow list will be rejected. If you set it to "Deny", you can specify a list of regular expressions that match the aliases of the endpoints that you want to deny. Any endpoint that matches any of the expressions in the deny list will be rejected. If you set it to
"None", you can disable the restriction policy feature and allow all endpoints to register.
In this question, the engineer wants to only allow the registration of endpoints with aliases containing cisco.
com as the domain. Therefore, the best option is to set the restriction policy to "Allow" and include the expression. *@cisco. com in the allow list. This expression will match any alias that ends with @cisco.com, such as [email protected], [email protected], etc. Any other alias that does not end with @cisco.com, such as [email protected], [email protected], etc., will not match the expression and will be rejected.
References := Cisco Expressway Basic Configuration Deployment Guide, Cisco Expressway Administrator Guide

TMS, or Cisco TelePresence Management Suite, is a software application that enables centralized management of Cisco video conferencing and collaboration devices and systems. TMS relies on the following two operating systems and database applications1:
* Windows Server: TMS requires a Windows Server operating system to run. The supported versions are Windows Server 2019, 2016, and 2012 R22.
* SQL: TMS requires a SQL database application to store and manage data. The supported versions are SQL Server 2019, 2017, 2016, and 20142.
The other options are not correct because:
* Oracle: TMS does not support Oracle as a database application. TMS only supports SQL Server as a database application2.
* MS Access: TMS does not support MS Access as a database application. TMS only supports SQL Server as a database application2.
* Linux Ubuntu: TMS does not support Linux Ubuntu as an operating system. TMS only supports Windows Server as an operating system2.
References := 1: Cisco TelePresence Management Suite (TMS) - Cisco 2: Cisco TelePresence Management Suite Installation and Upgrade Guide (15.16) - System Requirements [Cisco TelePresence Management Suite]
- Cisco

To add individual endpoints or infrastructure to the TMS database, an engineer needs to use the System > Navigator menu in the TMS application. The System > Navigator menu allows the engineer to browse, search, and manage systems in the TMS database. The engineer can add systems manually, by IP address, by DNS name, or by discovery12. The engineer can also edit, delete, move, or group systems in the System > Navigator menu12. References := 1
https://community.cisco.com/t5/telepresence-and-video-infrastructure/add-endpoints-to-tms-hosted-solution
/td-p/1998838
https://community.cisco.com/t5/telepresence-and-video-infrastructure/add-cucm-registered-endpoint-to-tms
/td-p/2143976