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Prepare for the F5 Networks BIG-IP Administration Control Plane Administration exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.
QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the F5 Networks F5CAB4 exam and achieve success.
The questions for F5CAB4 were last updated on Apr 21, 2026.
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What is the tmsh command to list the IP ranges that can access the management interface via SSH? (Choose one answer)
Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:
On BIG-IP systems, SSH access restrictions are configured under the /sys sshd object. The allow property defines the IP addresses or networks permitted to connect to the management interface using SSH.
The list command is used to display the current configuration settings.
Therefore, tmsh list /sys sshd allow correctly displays the configured allowed IP ranges.
Why the other options are incorrect:
A (show) displays runtime or statistical information, not configuration values.
C and D incorrectly reference /etc/hosts.allow; BIG-IP manages SSH access through TMSH objects, not by directly listing host files in this context.
A BIG-IP Administrator makes a configuration change to a Virtual Server on the Standby device of an HA pair. The HA pair is currently configured with Auto-Sync Enabled. What effect will the change have on the HA pair configuration?
Comprehensive and Detailed Explanation From BIG-IP Administratio24n Control Plane Administration documents: TMOS Device Service Cluste25ring (DSC) allows for configuration changes to be made on any device within a synchronization group. If Auto-Sync is enabled, the Control Plane detects the change on the Standby unit and automatically propagates (pushes) that updated configuration to the other members of the HA pair
Which file should the BIG-IP Administrator check to determine when a Virtual Server changed its status?
Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents: Monitoring and reporting current device status involves tracking the health of traffic objects like Virtual Servers20. The Control Plane logs transition events---such as a Virtual Server moving from 'Available' (green) to 'Offline' (red) due to health monitor failures---in the /var/log/ltm file21212121. While the audit log tracks who changed a configuration, the LTM log tracks system-initiated status changes22222222.
Which TMSH command initiates a manual configuration synchronization to the specified device group? (Choose one answer)
Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:
In a BIG-IP Device Service Cluster (DSC), manual configuration synchronization is performed using the ConfigSync framework. The supported and documented command to manually push the local configuration to a specific device group is:
tmsh run cm config-sync to-group <device_group>
This command:
Initiates a one-time manual ConfigSync
Pushes the local device's configuration to all members of the specified device group
Is commonly used when auto-sync is disabled or when the administrator wants explicit control over synchronization timing
Why the other options are incorrect:
A is not a valid TMSH command for ConfigSync.
B enables auto-sync but does not perform an immediate synchronization.
D is not a valid or supported TMSH command for device group configuration synchronization.
Therefore, the correct command to manually synchronize configuration to a device group is C.
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A BIG-IP Administrator needs to fall over the active device. The administrator logs into the Configuration Utility and navigates to Device Management > Traffic Group. However, "Force to Standby" is greyed out. What is causing this issue?
Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents: In a High Availability pair, the 'Force to Standby' action is a Control Plane command used to trigger a manual failover. This option is only logical and available on the device that is currently in the Active state. If the button is greyed out, it indicates that the administrator is already logged into the Standby unit, which has no active traffic groups to relinquish.
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