F5CAB1 Install, Initial Configuration, and Upgrade Practice Question
When upgrading a BIG-IP system using the Software Management utility, which TWO of the following tasks are strictly required to ensure a successful transition between major software versions?
⚠ Common exam trap
Candidates frequently focus only on the installation process itself, forgetting the critical pre-upgrade steps like verifying configuration compatibility and disk space, which are mandatory to prevent a failed or corrupted upgrade.
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
✓
Validate the configuration using the 'tmsh load sys config verify' command.
Upgrading BIG-IP systems requires careful preparation, specifically ensuring the configuration is compatible with the target version and that the boot location has sufficient capacity. Performing a configuration check (qkview/TMSH check) prevents common upgrade failures related to deprecated features or syntax changes. Verifying storage space ensures the installation process does not fail mid-installation, preventing corrupted boot partitions and potential system downtime during the upgrade window.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Install all hotfixes available on the F5 Downloads site before the major upgrade.
Why it's wrong here
Installing every hotfix is unnecessary and can complicate the upgrade process. Only the target version and its required base ISO are needed. Unnecessary hotfixes increase the surface area for errors and consume valuable storage space on the boot volume without providing any tangible benefit to the upgrade.
- ✓
Validate the configuration using the 'tmsh load sys config verify' command.
Why this is correct
This command checks the configuration file for syntax errors and compatibility issues against the current binary. Failing to verify the config before an upgrade can result in the system failing to load the configuration after rebooting into the new version, leading to an unusable state.
- ✗
Delete all existing snapshots to free up space in the /var partition.
Why it's wrong here
Snapshots are stored in /var, but the upgrade happens in the boot volume partition. Deleting snapshots does not provide the space required for the ISO installation on the boot volume. This action is unrelated to the software upgrade installation space requirements and risks losing valuable configuration history.
- ✓
Confirm sufficient free space on the target boot location partition.
Why this is correct
The BIG-IP installation process requires adequate space on the destination partition to extract the ISO image. Insufficient space will cause the installation to fail, potentially leaving the boot volume in a corrupted state. Always verify available volume capacity before initiating the install process for any new version.
- ✗
Reboot the unit into the current version to clear RAM cache.
Why it's wrong here
Rebooting into the current version does not impact the installation process for a different boot slot. RAM is cleared upon any reboot regardless of the target slot. This step provides no functional benefit for the software upgrade process and simply adds unnecessary downtime to the maintenance window.
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.