Troubleshooting & Maintenance Flashcards
7 cards from real CCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Troubleshooting & Maintenance flashcards as text
A Casper device is cycling power unexpectedly every few minutes. What is the most likely root cause?
Answer: Corrupted firmware causing a watchdog timer reset
A watchdog timer reset triggered by corrupted firmware is the most common cause of unexpected repetitive power cycling in Casper devices.
Which Casper diagnostic command is used to force a hardware inventory refresh on a managed device?
Answer: jamf recon
The 'jamf recon' command forces the device to perform a new inventory submission to the Jamf Pro server.
A technician notices that smart card authentication is failing after a Casper enrollment. Which component should be checked first?
Answer: The device's certificate trust store
Smart card authentication relies on certificate trust chains, so a missing or expired certificate in the trust store is the most common failure point.
After a Jamf Pro server upgrade, policies are no longer triggering on check-in. What is the first troubleshooting step?
Answer: Verify the JSS URL in the device's MDM profile matches the new server address
A server URL mismatch between the device's MDM profile and the upgraded JSS is the most common cause of check-in policy failures post-upgrade.
A Casper-managed Mac is showing 'Management Framework Damaged' in Self Service. What corrective action resolves this?
Answer: Perform a 'sudo jamf removeFramework' followed by re-enrollment
Removing the damaged management framework and re-enrolling the device restores a clean Jamf management state.
Which log file on a macOS endpoint is most useful for diagnosing Jamf policy execution failures?
Answer: /Library/Logs/jamf.log
The /Library/Logs/jamf.log file contains detailed records of every policy execution, error, and action taken by the Jamf binary.
A Casper device fails to receive policies because port 8443 is blocked. Which Casper communication path does this affect?
Answer: Device check-in communication with Jamf Pro
Port 8443 is the default HTTPS port used by devices to check in and communicate policies with the Jamf Pro server.