F5CAB4 Control Plane Administration Practice Question
An administrator is managing multiple BIG-IP devices using a centralized management tool. Which protocol is most commonly used for secure, automated control plane configuration updates?
⚠ Common exam trap
Candidates often choose SNMP or TMSH as the primary automation tool. While those are used, they are not the modern industry-standard RESTful API designed specifically for programmatic configuration updates.
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
✓
iControl REST
iControl REST is the industry-standard API for programmatic BIG-IP configuration. It provides a RESTful interface that allows administrators to push configuration changes, query device status, and automate routine tasks. Its usage is critical in modern DevOps and CI/CD environments, as it offers a scalable and efficient alternative to manual TMSH commands, allowing for consistent configuration across large device fleets while reducing the risk of human error in complex deployments.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
FTP
Why it's wrong here
FTP is an insecure legacy protocol and is not used for API-driven configuration management. It does not support the transactional security or granular control required for updating BIG-IP configuration objects. Using FTP would expose sensitive configuration data in cleartext and offer no mechanism for validating changes against the mcpd daemon.
- ✓
iControl REST
Why this is correct
iControl REST is the primary API for BIG-IP configuration management. It is secure, scalable, and fully integrated with the mcpd daemon, allowing for programmatic creation, updates, and deletion of configuration objects. This makes it the preferred method for automated control plane management in modern, high-scale application delivery environments, ensuring consistency and auditability.
- ✗
Telnet
Why it's wrong here
Telnet is entirely insecure as it transmits all data, including credentials, in cleartext. It is deprecated for all administrative tasks on BIG-IP systems. Using Telnet would represent a massive security failure and would not provide the structured API access required for automated, reliable configuration updates in a production environment.
- ✗
ICMP
Why it's wrong here
ICMP is a network-level diagnostics protocol used for connectivity testing, such as ping. It has no capability to transmit or process configuration data or API requests. Attempting to use ICMP for configuration management is technically impossible, as it is designed for error reporting and heartbeat checks between network devices.
About these practice questions
Courseiva writes every F5CAB4 question from scratch — 40 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.