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| Certification Vendor: | F5 |
|---|---|
| Exam Name: | BIG-IP Administration Control Plane Administration |
| Exam Number: | F5CAB4 |
| Exam Duration: | 30 minutes |
| Real Exam Qty: | 30 |
| Available Languages: | English |
| Exam Price: | $50 USD |
| Related Certifications: | F5 Certified Administrator, BIG-IP (F5-CA) |
| Exam Format: | Multiple Choice, Scenario-based |
| Sample Questions: | F5 F5CAB4 Sample Questions |
| Exam Way: | Pearson VUE Testing Centers (Online proctored option may be available) |
| Pre Condition: | Recommended: Basic understanding of network concepts and previous completion of F5CAB1 or equivalent experience. |
| Official Syllabus URL: | https://education.f5.com/course/view/1091 |
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NEW QUESTION # 40
Administrative user accounts have been defined on the remote LDAP server and are unable to log in to the BIG-IP device. Which log file should the BIG-IP Administrator check to find the related messages? (Choose one answer)
Answer: A
Explanation:
When BIG-IP is configured to use remote authentication (such as LDAP), all authentication and authorization attempts--including successes and failures--are logged to /var/log/secure.
For LDAP-based administrative login issues, /var/log/secure contains:
LDAP authentication failures
PAM authentication errors
Authorization and access-denied messages
Details explaining why a remote user could not log in
NEW QUESTION # 41
In which of the following log files would log events pertaining to pool members being marked "UP" or
"DOWN" by their Health Monitors be written? (Choose one answer)
Answer: A
Explanation:
On BIG-IP systems, Local Traffic Manager (LTM) is responsible for:
* Pool and pool member management
* Health monitor execution
* Marking pool members UP or DOWN based on monitor results
Events related to health monitor status changes, including when pool members transition between UP and DOWN, are logged in /var/log/ltm.
Why the other options are incorrect:
* /var/log/audit records administrative configuration changes, not runtime health status.
* /var/log/secure logs authentication and authorization events.
* /var/log/monitors is not a standard BIG-IP log file.
Therefore, the correct log file for pool member health monitor status events is /var/log/ltm.
NEW QUESTION # 42
Refer to the exhibit.
The BIG-IP Administrator is investigating disk utilization on the BIG-IP device. What should the BIG-IP Administrator check next? (Choose one answer)
Answer: A
Explanation:
When troubleshooting a BIG-IP system where a partition is reported as full (100% utilization), identifying and removing large or unnecessary files is the immediate next step for restoration of system stability.
* Symptoms of Full Partitions: If a file system (such as the root / or /var) becomes full, it can result in unpredictable system behavior, failure to save configurations, and the inability to log in to the Web UI.
* The Root (/) Partition: This partition is intentionally kept small on F5 systems. It is highly sensitive to the storage of third-party software or diagnostic files that should ideally be stored in the /shared or /var directories.
* Procedural Resolution: To resolve 100% disk usage, administrators should check for large files on the affected partition using CLI commands like du -ah or find / -xdev -type f -exec du {} \; | sort -rn | head
-20.
* Common Culprits: Large files typically causing these issues include old core files, tech support bundles, large diagnostic logs (packet diags), or temporary files created during administrative tasks.
* Diagnostics vs. Remediation: While tests like the EUD (End User Diagnostics) or platform diagnostics are useful for hardware verification, they do not resolve file system exhaustion issues that have already reached a critical 100% state.
NEW QUESTION # 43
What can the BIG-IP Administrator do when restoring BIG-IP configuration files with a UCS archive? (Choose two answers)
Answer: A,D
Explanation:
The User Configuration Set (UCS) is a flexible tool designed by the Control Plane to handle various lifecycle management scenarios, including upgrades and hardware migrations.
Version Compatibility (Option B): TMOS is designed to be backward compatible. The Control Plane can ingest a UCS file created on an older version of software and automatically upgrade the configuration objects to match the current, later version during the restore process.
Platform Portability (Option C): While a UCS archive contains platform-specific information, the BIG- IP system allows for "platform-independent" restores. This is a vital procedural concept for migrating from one hardware model to another or from physical hardware to a Virtual Edition (VE).
Management of State: When restoring to a different platform or a later version, the administrator often uses specific flags (such as no-license or platform-migrate in later versions) to ensure that only the portable configuration data is applied while preserving the new platform's unique identifiers.
NEW QUESTION # 44
One of the two members of a device group has been decommissioned. The BIG-IP Administrator tries to delete the device group, but is unsuccessful. Prior to removing the device group, which action should be performed? (Choose one answer)
Answer: D
Explanation:
A BIG-IP device group cannot be deleted if it still contains device members, even if one of those devices has already been decommissioned or is unreachable. Before deleting the device group, the administrator must explicitly remove the decommissioned device from the device group configuration.
Once the removed or unreachable device is deleted from the device group membership, the BIG- IP system allows the remaining administrator to successfully delete the device group.
NEW QUESTION # 45
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