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| Certification Vendor: | F5 |
|---|---|
| Exam Name: | BIG-IP Administration Support and Troubleshooting (F5CAB5) |
| Exam Number: | F5CAB5 |
| Related Certifications: | BIG-IP Administration Data Plane Configuration BIG-IP Administration Install, Initial Configuration, and Upgrade BIG-IP Administration Data Plane Concepts BIG-IP Administration Control Plane Administration |
| Real Exam Qty: | 25-30 |
| Exam Duration: | 30 minutes |
| Passing Score: | 245 |
| Exam Format: | Multiple Choice |
| Available Languages: | English |
| Exam Price: | USD 50 (online) / USD 65 (test center) |
| Recommended Training: | Administering BIG-IP Course Troubleshooting BIG-IP Training |
| Exam Registration: | F5 Certification Portal F5 Education Exam Page |
| Sample Questions: | F5 F5CAB5 Sample Questions |
| Exam Way: | Online proctored (Certiverse) or test center proctored (Pearson VUE) |
| Pre Condition: | No formal prerequisites required; part of the F5 Certified Administrator, BIG-IP certification path (5-exam series). |
| Official Syllabus URL: | https://education.f5.com/exams/big-ip-administration-support-and-troubleshooting-f5cab5 |
>> Accurate F5CAB5 Prep Material <<
The F5 F5CAB5 exam questions on the platform have been gathered by subject matter experts to ensure that they accurately reflect the format and difficulty level of the actual F5 F5CAB5 exam. This makes these BIG-IP Administration Support and Troubleshooting PDF Questions ideal for individuals looking to pass the F5 F5CAB5 Exam on their first try. You can evaluate the product with a free F5CAB5 demo.
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NEW QUESTION # 49
A BIG-IP Administrator makes a configuration change to the BIG-IP device. Which file logs the message regarding the configuration change?
Answer: B
Explanation:
The BIG-IP system uses the audit log to track administrative actions and configuration changes.
* Audit Logging Functionality: When a user modifies the configuration via the Configuration Utility (GUI), the Traffic Management Shell (tmsh), or iControl, the system records the event in the audit log.
This includes the name of the user who made the change, the timestamp, and the specific command or object that was modified.
* Log Location: The audit log is stored at /var/log/audit.
* Evaluation of Other Options:
* /var/log/messages (Option A) contains general system and kernel messages but is not the primary source for configuration change details.
* /var/log/secure (Option B) primarily logs authentication and authorization attempts (logins and logouts).
* /var/log/user.log (Option D) is a generic Linux log file for user-level applications and does not track BIG-IP LTM configuration changes.
NEW QUESTION # 50
A set of servers is used for an FTP application as well as an HTTP website via separate BIG-IP Pools. The server support team reports that some servers are receiving a lot more traffic than others. Which Load Balancing Method should the BIG-IP Administrator apply to even out the connection count?
Answer: A
Explanation:
When load balancing is not working as expected across hardware hosting multiple services, the administrator must distinguish between "member" and "node" level algorithms102102102102. A "member" is a specific IP and port (e.g., 10.1.1.1:80), while a "node" is the physical server's IP (10.1.1.1) regardless of the port103. If servers host both FTP and HTTP services in separate pools, using "Least Connections (Member)" only balances connections within each individual pool. This can lead to a skewed distribution where one server is selected for a new HTTP connection because it has the fewest HTTP connections, even if it is currently overloaded with hundreds of FTP connections. By applying "Least Connections (Node)," the BIG-IP tracks the total number of connections to the physical hardware across all ports and pools106106106106. This ensures that the administrator can maintain an even distribution of the total workload across the server fleet, resolving the reports of uneven traffic distribution reported by the server support team
NEW QUESTION # 51
The BIG-IP is experiencing issues with data plane resources. Which traffic processing would be most impacted?
Answer: C
Explanation:
The BIG-IP architecture is divided into two distinct planes: the Control Plane (Management) and the Data Plane (Traffic Management Microkernel - TMM).
Data Plane (TMM): This plane is responsible for the actual processing of application traffic, including load balancing, SSL offloading, and session management for modules like APM (Access Policy Manager). If data plane resources (CPU/Memory allocated to TMM) are exhausted, active user sessions and traffic throughput are directly degraded.
APM Sessions: Because APM sessions are managed within the TMM process to ensure high- speed access control and tunneling, they are a primary "Data Plane" function.
NEW QUESTION # 52
A BIG-IP Administrator notices that one of the servers that runs an application isNOTreceiving any traffic.
The BIG-IP Administrator examines the configuration status of the application and observes the displayed monitor configuration and affected pool member status.
What is the possible cause of this issue? (Choose one answer)
Answer: C
Explanation:
The key clue in the exhibit is the pool member's availability showing"Offline (Enabled) - Parent down". In BIG-IP terminology, a pool member inherits the status of itsparent node. If thenodeis marked down (for example, by a node-level monitor or a default "node is down" condition), thenall pool members using that node IPwill also be marked down and will not receive any traffic, even if the application service on the member port might be healthy.
While the HTTPS monitor configuration (send/receive strings) is displayed, the statusspecificallyindicates anode (parent) failure, not a service-level failure. If the problem were the application not matching the receive string, you would typically see the member down due to themember's monitorfailing (and the status would reflect monitor failure details), rather than "parent down." Option D is too broad; BIG-IP can generally reach the subnet (other servers work), and this symptom points to a specific node condition. Option C is incorrect because HTTP/1.1 is commonly used for monitoring and is valid when properly formatted (especially with a Host header). Therefore, the most likely cause is that thenode health monitor is not responding, causing the node-and consequently the member-to be marked down.
NEW QUESTION # 53
A BIG-IP Administrator suspects that one of the BIG-IP device power supplies is experiencing power outages. Which log file should the BIG-IP Administrator check to verify the suspicion?
Answer: B
Explanation:
On a BIG-IP system, hardware-related alerts, including those for power supply units (PSUs), fans, and chassis components, are primarily logged in the Local Traffic Manager (LTM) log file.
* Log Location: The file path is /var/log/ltm.
* PSU Alert Messages: When a power supply fails, experiences an outage, or is unplugged, the chmand (Chassis Manager) or system_check processes log specific error codes to this file. For example, you may see messages like 010d0006:0: Chassis power supply <X> has experienced an issue or VINPUT=bad.
* Troubleshooting: Administrators can use the command grep -i "power supply" /var/log/ltm to quickly filter for PSU-related events.
* Other Logs: * /var/log/kern.log typically contains low-level kernel and driver messages.
* /var/log/audit tracks administrative changes and commands executed by users.
* /var/log/daemon.log contains messages from various system background services but is not the primary location for hardware sensor alerts.
NEW QUESTION # 54
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