Reference:
Using_the_Ping_Live_Tool

Explanation
On the device, navigate to Settings > General > Device Management
Select Meraki Management, and select Remove to delete the management profile and any managed configuration profiles installed via SM

SM Sentry enrollment can be enabled on any MR network via the Splash page section of the Wireless > Configure > Access control page. https://documentation.meraki.com/MR/MR_Splash_Page
/Systems_Manager_Sentry_Enrollment

A, C, and F are correct. The originally supplied answer A alone is incomplete . Cisco Meraki explicitly documents the complete transport mechanism: Meraki Insight aggregates network statistics locally on the MX and sends only those aggregates to the Meraki Cloud as TLS-SYSLOG traffic using TCP port 443 .
Therefore, the three components requested are port 443 (A) , TCP (C) , and TLS-SYSLOG (F) . TLS protects the telemetry while TCP provides the underlying reliable transport.
This architecture is important because Meraki Insight does not send the customer ' s actual application traffic to the cloud for analysis. The MX functions as the local collector, derives performance statistics from HTTP
/HTTPS application flows, and exports the resulting aggregated measurements. The cloud performs the heavier analysis and presents LAN, WAN, ISP, client, and server performance information in Dashboard.
B is incorrect because Insight aggregates use TCP, not UDP. D is incorrect because UDP 7351 is associated with traditional Meraki device-to-cloud management communications, not Insight ' s aggregate-statistics transport. E is incomplete/incorrect because the Insight data is specifically protected using TLS-SYSLOG , not ordinary unencrypted SYSLOG.
Reference/Study Topic: Meraki Insight Introduction - MX Collector, Web Application Health, Insight Cloud Communication.