If the VPN tunnel successfully connects but internal resources cannot be reached by their fully qualified domain names, DNS configuration is the most relevant area to examine. DNS translates hostnames and FQDNs into IP addresses. Apple's VPN configuration documentation supports DNS server addresses, DNS search domains, domain names, and supplemental match domains for VPN connections, including split-DNS configurations. An incorrect DNS server, missing internal search domain, or incorrect match-domain configuration can allow the VPN itself to establish successfully while preventing internal hostnames from resolving. QoS affects traffic prioritization rather than hostname resolution. Screen Time has no role in corporate DNS resolution, and Fastlane restrictions do not address this symptom. Therefore, the DNS settings associated with the VPN connection should be reviewed first.

Apple Notarization is a malware-scanning service for Mac software distributed outside the Mac App Store.
Developers submit their software to Apple, which scans it for known malicious content. If no known malware is detected and the submission satisfies the notarization process, Apple issues a notarization ticket. Developers can staple that ticket to the application so Gatekeeper can verify the notarization even when the Mac is offline. Therefore, option C is correct. A revocation ticket is different: Apple can issue one when software is later identified as malicious. Apple does not require all Mac applications to be distributed exclusively through the Mac App Store. Developer ID signing, Notarization, Gatekeeper, and XProtect collectively allow trusted applications to be distributed securely outside the App Store.

Connection Doctor is a built-in tool in Mail that helps you diagnose and fix problems with your email accounts and connections. It shows the status of each account, whether it is online or offline, and any errors that occurred. It also lets you test the connection to the incoming and outgoing mail servers, and view the details of the connection attempt. Connection Doctor is the first tool you should use when you encounter Mail connectivity issues in macOS, as it can help you identify the source and nature of the problem quickly and easily. References : = Apple Device Support Exam Prep Guide , page 11; [Mail User Guide for Mac], section "Check the status of your email accounts".

Find My uses Bluetooth signals from nearby Apple devices to locate lost or missing devices, even when they're offline. This feature is called Find My network, and it creates a secure and anonymous network of hundreds of millions of Apple devices that can help find each other. When you mark your device as lost, it sends out a secure Bluetooth beacon that can be detected by other Apple devices nearby. Those devices relay the location of your device to iCloud so you can see it on a map. Find My network respects your privacy and does not reveal any personal information or location data to anyone. Find My also uses Wi-Fi and cellular data to locate devices that are online and have Location Services enabled. References: Find My network overview - Apple Support, Locate a device in Find My on iPhone - Apple Support

To view the current activity of Apple Configurator for Mac, you can access the Activity window from the menu bar. The Activity window shows you the background tasks that Apple Configurator is performing, such as downloading software updates, preparing devices, or installing profiles. You can also pause, resume, or cancel any activity from this window1. The other options, double-clicking the device and selecting Activity, or choosing View Activity from the Apple Configurator menu, are not valid ways to access the Activity window. References: 1 View log messages and activity in Apple Configurator - Apple Support