F5CAB1 Install, Initial Configuration, and Upgrade Practice Question
An administrator is performing a fresh installation of BIG-IP VE on a hypervisor. After booting the ISO, the system fails to reach the Configuration Utility. Which initial task must be completed via the serial console to enable network access?
⚠ Common exam trap
Candidates assume the GUI is available immediately upon boot. They fail to realize that the management interface lacks an IP address by default, requiring CLI configuration via the serial console first.
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
✓
Execute the 'config' utility via the CLI.
Before the Configuration Utility is accessible, the BIG-IP system requires a base network configuration, including the management IP address, netmask, and default gateway. Without these parameters, the system cannot route traffic to the management interface. Performing this via the console is essential because the GUI is inactive until the management IP is routable, ensuring secure initial connectivity for subsequent administrative tasks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run the 'tmsh install software' command.
Why it's wrong here
This command is used for applying software upgrades or hotfixes to an existing partition. It does not configure the management network or perform the initial setup for a new installation. The system must already be running to execute this command, which is not possible before the initial boot configuration.
- ✓
Execute the 'config' utility via the CLI.
Why this is correct
The 'config' command initiates the setup wizard in the CLI, allowing the administrator to define the management IP, netmask, and gateway. This step is mandatory for new BIG-IP VE deployments to establish network connectivity, enabling the web-based Configuration Utility to be accessed from a remote workstation.
- ✗
Enable the 'bigdb' variable for GUI access.
Why it's wrong here
Bigdb variables control internal system behaviors and parameters, but they are not the primary mechanism for configuring the management network interface. Enabling a variable does not replace the requirement for a valid IP address and gateway, making this step insufficient for establishing initial administrative connectivity to the device.
- ✗
Format the primary partition using 'fdisk'.
Why it's wrong here
Formatting the partition manually is unnecessary and potentially harmful to the BIG-IP file system structure. The installation process automatically handles partition formatting during the initial deployment. Manual partitioning interferes with the integrity of the BIG-IP boot process and does not address the requirement for network interface configuration.
Visual reference
About these practice questions
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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 F5CAB1 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 F5CAB1 exam.