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| Certification Vendor: | F5 |
|---|---|
| Exam Name: | BIG-IP Administration Data Plane Concepts |
| Exam Number: | F5CAB2 |
| Exam Price: | $50 USD |
| Exam Format: | Multiple Choice, Scenario-based |
| Exam Duration: | 30 minutes |
| Passing Score: | Pass/Fail (Scaled scoring, specific threshold not publicly disclosed per sub-exam) |
| Related Certifications: | F5 Certified Administrator, BIG-IP (F5-CA) |
| Available Languages: | English |
| Real Exam Qty: | 30 |
| 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 |
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NEW QUESTION # 43
To increase available bandwidth of an existing Trunk, the BIG-IP Administrator is adding additional interfaces. Which command should the BIG-IP Administrator run from within bash shell?
Answer: B
Explanation:
Configuring networking objects in BIG-IP requires using the correctTMSH module pathandverb.
* Module Path:Trunks are networking objects, so they reside under the /net module, not /sys.
* Verb:Since the trunk already exists, the modify verb must be used to update its properties rather than create.
* Syntax:The correct syntax to append physical interfaces to an existing trunk is tmsh modify /net trunk
[name] interfaces add { [port list] }.
* Data Plane Impact:Adding interfaces to a trunk (Link Aggregation) increases the total aggregate bandwidth available to the system and provides additional hardware redundancy.
NEW QUESTION # 44
An application is configured so that the same pool member must be used for an entire session, as well as for HTTP and FTP traffic. A user reports that a session has terminated, and the user must restart the session. The BIG-IP Administrator determines that the active BIG-IP device failed over to the standby BIG-IP device.
Which configuration settings should the BIG-IP Administrator verify to ensure proper behavior when BIG-IP failover occurs?
Answer: A
Explanation:
In this scenario, two specific High Availability and Persistence requirements must be met to ensure session continuity during a failover.
* Persistence Mirroring:By default, persistence records (which map a client to a specific server) exist only on the memory of the active BIG-IP. If a failover occurs, the standby unit has no knowledge of these sessions and will re-load-balance the client, likely to a different server. EnablingPersistence Mirroringensures that the persistence table is synchronized in real-time to the standby peer.
* Match Across Services:The requirement specifies that the session must persist across bothHTTPand FTP. These are different Virtual Servers (and likely different ports). TheMatch Across Servicessetting in the persistence profile allows the BIG-IP to use the same persistence record for any Virtual Server that shares the same IP address and pool, regardless of the service port.
NEW QUESTION # 45
Refer to the exhibit.
The BIG-IP Administrator needs to avoid overloading any of the pool members with connections when they become active. What should the BIG-IP Administrator configure to meet this requirement? (Choose one answer)
Answer: B
Explanation:
Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents:
This question focuses on connection behavior when pool members transition from down to up, which is a classic data plane consideration in BIG-IP environments.
What problem is being solved?
When a pool member:
Recovers from a failure
Is enabled after maintenance
Transitions from inactive to active
...it can suddenly receive a large burst of new connections, especially when using load-balancing methods such as Least Connections. This sudden surge can overload the server.
Why Slow Ramp Time is the correct solution:
Slow Ramp Time is a pool-level setting that:
Gradually increases the number of connections sent to a newly available pool member Prevents sudden spikes in traffic Allows the server to warm up (application cache, JVM, DB connections, etc.) From BIG-IP Administration Data Plane Concepts:
Slow Ramp Time controls the rate at which BIG-IP increases load to a pool member that has just become available During the ramp period, BIG-IP artificially increases the member's connection count, making it appear "busier" and therefore less attractive for new connections This directly satisfies the requirement to avoid overloading pool members when they become active.
Why the Other Options Are Incorrect:
B . Different Ratio for each member
Ratios control relative distribution under normal operation
They do not prevent a sudden surge when a member becomes active
C . Action On Service Down to Reselect
Controls persistence behavior when a member goes down
Has no impact on connection ramp-up when a member comes back online
D . Same Priority Group to each member
Affects failover logic between priority groups
Does not control connection rate or ramp-up behavior
Key Data Plane Concept Reinforced:
To protect backend servers during recovery events, BIG-IP provides Slow Ramp Time, ensuring graceful reintroduction of traffic and preventing connection storms that can occur during high-load scenarios.
NEW QUESTION # 46
Active connections to pool members are unevenly distributed. The load balancing method is Least Connections (member). Priority Group Activation is disabled.
What is a potential cause of the uneven distribution? (Choose one answer)
Answer: A
Explanation:
With Least Connections (member), BIG-IP attempts to send new connections to the pool member with the fewest current connections. In a perfectly "stateless" scenario (no affinity), this often trends toward a fairly even distribution over time.
However, persistence overrides load balancing:
When a persistence profile is applied, BIG-IP will continue sending a client (or client group) to the same pool member based on the persistence record (cookie / source address / SSL session ID, etc.).
This means even if another pool member has fewer connections, BIG-IP may still select the persisted member to honor session affinity.
The result can be uneven active connection counts, even though the configured load balancing method is Least Connections.
Why the other options are not the best cause:
A . Priority Group Activation is disabled
Priority Group Activation only affects selection when priority groups are configured; disabling it does not inherently create uneven distribution under Least Connections.
B . SSL Profile Server is applied
A server-side SSL profile affects encryption to pool members, but it does not by itself cause skewed selection across pool members. (Skew could happen indirectly if members have different performance/latency, but that's not the primary, expected exam answer.) D . Incorrect load balancing method Least Connections is a valid method and does not itself explain unevenness unless something is overriding it (like persistence) or pool members are not all eligible.
Conclusion:
A persistence profile is the most common and expected reason that active connections become unevenly distributed, because persistence takes precedence over the Least Connections load-balancing decision.
NEW QUESTION # 47
When using the setup utility to configure a redundant pair, you are asked to provide a "Failover Peer IP". Which address is this?
Answer: A
NEW QUESTION # 48
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