F5-CA F5CAB4 Exam Questions and Answers PDF

Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:

On BIG-IP systems that participate in a Device Service Cluster (DSC), each device compares theremote device’ssystem time to itsownsystem time. If the difference is outside theConfigSync time threshold(commonly referenced as3 seconds by default), BIG-IP updates the shell prompt to show“Peer Time Out of Sync”, andConfigSync operations may failuntil time is corrected (typically by fixing NTP reachability/configuration, or in some cases adjusting the threshold). (cdn.studio.f5.com)

This message is specifically abouttime drift between peersin the trust domain/DSC—not basic reachability (soBis not what it means), and it doesnotprove which side is “correct” (soCis too specific). It also doesn’t directly mean an NTP source is “skewed” (A can be acause, but the prompt message itself indicates thepeer-to-peer time mismatchcondition). (cdn.studio.f5.com)

Comprehensive and Detailed Explanation From BIG-IP Administration Con10trol Plane Administration documents:Placing a device in the FORCED_OFFLINE state is a critical procedural concept for HA maintenance111213.1415Unlike simply being 'Standby16', the FORCED_OFFLINE state ensures tha17t the Control Plane will not participate in failover selection, effectively preventing the device from becoming 'Active' even if the peer fails18. This state also allows the administrator to terminate existing connections to ensure no traffic is being processed during the maintenance window19.

Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:

In a BIG-IPDevice Service Cluster (DSC), manual configuration synchronization is performed using theConfigSyncframework. The supported and documented command to manually push the local configuration to a specific device group is:

tmsh run cm config-sync to-group

This command:

Initiates aone-time manual ConfigSync

Pushes the local device’s configuration to all members of the specified device group

Is commonly used whenauto-sync is disabledor when the administrator wants explicit control over synchronization timing

Why the other options are incorrect:

Ais not a valid TMSH command for ConfigSync.

Benables auto-sync but doesnotperform an immediate synchronization.

Dis not a valid or supported TMSH command for device group configuration synchronization.

Therefore, the correct command to manually synchronize configuration to a device group isC.

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