F5CAB4 Control Plane Administration Practice Question
When a BIG-IP system is in a High Availability (HA) pair, which component is primarily responsible for ensuring that the control plane configuration remains synchronized between devices?
⚠ Common exam trap
Candidates often confuse 'ConfigSync' with 'Failover' or 'Mirroring', failing to realize that these are distinct processes with different responsibilities in an HA cluster.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The ConfigSync process.
The ConfigSync feature is dedicated to synchronizing the configuration state between BIG-IP units in an HA group. It ensures that the standby unit maintains a mirrors-image of the active unit's settings. Understanding the role of ConfigSync is essential for administrators, as it guarantees that failover events are seamless and that the standby device is always prepared to assume the traffic processing role with identical configuration parameters.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Traffic Management Microkernel (TMM).
Why it's wrong here
TMM is responsible for processing data plane traffic, including load balancing, protocol inspection, and SSL offloading. While it interacts with the control plane, it does not handle the synchronization of configuration files between HA peers. That task is delegated to the higher-level control plane management processes.
- ✗
The Configuration Utility (GUI).
Why it's wrong here
The GUI is an interface for managing the system, but it does not perform the synchronization process. It merely triggers the underlying sync commands. The actual logic for replicating configuration data resides in the system's background management processes, which execute the sync operation when initiated by the administrator.
- ✓
The ConfigSync process.
Why this is correct
ConfigSync is the specific control plane feature built into BIG-IP to replicate configuration files across redundant devices. It ensures consistency, allowing both units in an HA pair to maintain a synchronized state, which is vital for uninterrupted service during failover scenarios and consistent policy enforcement.
- ✗
The Linux kernel.
Why it's wrong here
The Linux kernel manages basic operating system tasks, hardware resources, and process scheduling. While it provides the foundation for the F5 software stack, it does not possess the specific logic required to synchronize BIG-IP configuration objects between separate hardware units. That is managed by F5-specific user-space processes.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official F5 exam blueprint
This F5CAB4 practice question is part of Courseiva's free F5 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the F5CAB4 exam.