F5CAB1 Install, Initial Configuration, and Upgrade Practice Question
An administrator attempts to upgrade a BIG-IP system but receives an error stating that the 'required intermediate version' has not been reached. What is the correct way to handle this situation?
⚠ Common exam trap
Candidates try to force-install the latest version directly over a legacy system, ignoring direct upgrade path requirements and causing database migration errors.
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
✓
Install the intermediate version first, then the target.
BIG-IP upgrades often require specific intermediate software versions to ensure the configuration database (the bigip.conf file) is migrated correctly. Jumping from a very old version to the latest can cause the conversion script to fail. The administrator must install the mandatory intermediate version first, boot into it to allow the database conversion to occur, and then proceed with the final upgrade to the desired target version.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Force the install using the '--ignore-version' flag.
Why it's wrong here
Forcing an installation using ignore flags is dangerous and likely to cause a corrupted configuration database. The upgrade process includes essential schema migrations that must occur in sequence. Bypassing these checks can leave the BIG-IP in an unbootable state or with a non-functional configuration that cannot be easily repaired.
- ✓
Install the intermediate version first, then the target.
Why this is correct
This follows the vendor-supported upgrade path. Intermediate versions contain critical schema updates for the configuration database. By installing and booting into the intermediate version, the system correctly migrates the configuration, ensuring that all necessary fields and structures are updated for the final transition to the target BIG-IP version.
- ✗
Manually copy the bigip.conf file to the new version.
Why it's wrong here
Manually copying configuration files is unsupported and prone to errors, as the file structure often changes between major releases. The system upgrade process handles configuration migration automatically. Doing this manually bypasses the logic required to map old configurations to the new syntax, leading to service failure and potential security gaps.
- ✗
Re-license the device using the target version keys.
Why it's wrong here
Licensing is not the cause of an upgrade version mismatch error. The issue is structural and relates to the configuration migration path between releases. Even with a new license, the software itself will not allow the installation to proceed if the existing system version is too far behind the target.
About these practice questions
One of 80 original F5CAB1 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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 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.