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| Certification Vendor: | F5 |
|---|---|
| Exam Name: | BIG-IP Administration Data Plane Concepts |
| Exam Number: | F5CAB2 |
| Real Exam Qty: | 30 |
| Passing Score: | Pass/Fail (Scaled scoring, specific threshold not publicly disclosed per sub-exam) |
| Exam Duration: | 30 minutes |
| Exam Format: | Multiple Choice, Scenario-based |
| Available Languages: | English |
| Exam Price: | $50 USD |
| Related Certifications: | F5 Certified Administrator, BIG-IP (F5-CA) |
| Sample Questions: | F5 F5CAB2 Sample Questions |
| Exam Way: | Online (Pearson VUE) |
| Pre Condition: | None specified. It is one of five exams required for the F5 Certified Administrator, BIG-IP credential. |
| Official Syllabus URL: | https://education.f5.com/courses/1089 |
>> Valid F5CAB2 Exam Objectives <<
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NEW QUESTION # 53
A BIG-IP Administrator is making adjustments to an iRule and needs to identify which of the 235 virtual server configured on the BIG-IP device will be affected. How should the administrator obtain this information in an effective way? (Choose one answer)
Answer: B
Explanation:
In a large-scale BIG-IP environment with hundreds of virtual servers, the Network Map is the most effective tool for visualizing and auditing the relationships between various ADC objects.
* The Network Map Functionality: The Network Map provides a hierarchical view of the local traffic objects. It allows an administrator to see the status and dependencies of Virtual Servers, Pools, Pool Members, and associated iRules all in one screen.
* Search and Filter: By navigating to Local Traffic > Network Map, the administrator can use the Advanced Filter. This feature allows for searching specifically for an iRule name or a string within an iRule definition. Once the filter is applied, the system displays only the Virtual Servers that are associated with that specific iRule.
* Efficiency: While the "Virtual Server List" (Option D) can be customized to show columns for iRules, it is often cumbersome to scroll through hundreds of entries. The "iRules List" (Option B) displays the scripts themselves but does not provide a reverse-lookup list of all associated virtual servers in a single view as efficiently as the Network Map.
* Summary of Relationships: The Network Map is specifically designed to answer the question, "What is this object connected to?" making it the primary administrative interface for impact analysis during configuration changes.
NEW QUESTION # 54
A BIG-IP Administrator has acluster of devices.
What should the administrator doafter creating a new Virtual Server on device 1? (Choose one answer)
Answer: A
Explanation:
In a BIG-IPdevice service cluster, configuration objects such asvirtual servers, pools, profiles, and iRules are maintained throughconfiguration synchronization (config-sync).
Key BIG-IP concepts involved:
* Device Service Cluster (DSC)A cluster is a group of BIG-IP devices that share configuration data. One device is typically used to make changes, which are then synchronized to the rest of the group.
* Config-Sync Direction Matters
* Changes are made on alocal device
* Those changes must bepushed to the group
* The correct operation is"Sync Device to Group"
WhyCis correct:
* The virtual server was createdonly on device 1
* Other devices in the cluster do not yet have this object
* To propagate the new virtual server to all cluster members, the administrator mustsynchronize device 1 to the group Why the other options are incorrect:
* A. Synchronize the settings of the group to device 1This would overwrite device 1's configuration with the group's existing configuration and mayremove the newly created virtual server.
* B. Create a new cluster on device 1The cluster already exists. Creating a new cluster is unnecessary and disruptive.
* D. Create a new virtual server on device 2This defeats the purpose of centralized configuration management and risks configuration drift.
Conclusion:
After creating a new virtual server on a BIG-IP device that is part of a cluster, the administrator must synchronize the configuration from that device to the groupso all devices share the same ADC application objects.
NEW QUESTION # 55
Which statement is true concerning the default communication between a redundant pair of BIG-IP devices?
Answer: C
NEW QUESTION # 56
What should a BIG-IP Administrator configure to minimize impact during a failover? (Choose one answer)
Answer: D
Explanation:
In BIG-IP high availability (HA) deployments, one of the primary causes of traffic disruption during failover is Layer 2 and Layer 3 relearning by upstream network devices (switches and routers). When traffic groups move from the Active device to the Standby device, the network must quickly associate the IP addresses with the new device.
Why MAC Masquerading Minimizes Failover Impact:
MAC masquerading allows a traffic group to use a floating, shared MAC address for its Self IPs. This MAC address moves with the traffic group during failover.
Key benefits:
* The MAC address does not change when failover occurs
* Upstream switches do not need to relearn ARP entries
* Traffic resumes almost immediately after failover
* Dramatically reduces packet loss and connection interruption
From BIG-IP Administration Data Plane Concepts:
* MAC masquerade is specifically designed to provide fast failover
* It is a best practice for HA pairs, especially in environments sensitive to latency and connection loss Why the Other Options Are Incorrect:
* A. External monitors
* Used to check the availability of external resources
* Do not reduce network convergence or failover disruption
* B. Clone pool
* Used for traffic mirroring or security analysis
* Has no impact on failover behavior
* C. OneConnect profile
* Optimizes server-side TCP connections
* Does not address ARP or MAC relearning during failover
Key HA Concept Reinforced:
To minimize failover impact on live traffic, BIG-IP administrators should ensure Layer 2 continuity. MAC masquerading is the primary mechanism that enables near-instant failover by preventing ARP and MAC table reconvergence delays.
NEW QUESTION # 57
A BIG-IP Administrator assigns the default HTTP health monitor to a pool that has three members listening on port 80. When the administrator connects to each pool member using the curl utility, two of the members respond with a status of 404 Not Found, while the third responds with 200 OK. What will the pool show for member availability? (Choose one answer)
Answer: C
Explanation:
Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents:
In BIG-IP LTM, pool member availability is determined by health monitors, which continuously test application responsiveness and correctness.
For the default HTTP monitor, the behavior is defined as follows:
BIG-IP sends an HTTP request (by default, GET /)
The monitor expects a response with HTTP status 200 OK
Any HTTP response code other than 200 is considered a monitor failure
A failed monitor causes the associated pool member to be marked offline (down) Applying this to the scenario:
Two pool members return 404 Not Found
A 404 response indicates the requested object is missing
This response does not satisfy the success criteria of the default HTTP monitor BIG-IP marks these two members as offline One pool member returns 200 OK This matches the expected response code BIG-IP marks this member as online Resulting Pool Status:
2 members: Offline
1 member: Online
Why the Other Options Are Incorrect:
B - Members returning 404 responses cannot be considered healthy
C - At least one member responds with 200 OK, so the entire pool is not offline D - Not all members meet the monitor success criteria Key Data Plane Concept Reinforced:
BIG-IP health monitors validate not just reachability, but application correctness. For HTTP monitors, the response code is critical-404 is treated as a failure, even though the service is reachable.
NEW QUESTION # 58
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