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| Certification Vendor: | F5 |
|---|---|
| Exam Name: | BIG-IP Administration Data Plane Concepts |
| Exam Number: | F5CAB2 |
| Exam Format: | Multiple choice, Scenario-based |
| Related Certifications: | F5 Certified Administrator, BIG-IP |
| Real Exam Qty: | 30 |
| Available Languages: | English |
| Passing Score: | Not officially disclosed |
| Certificate Validity Period: | 3 years |
| Exam Price: | $50 USD |
| Exam Duration: | 30 minutes |
| Recommended Training: | BIG-IP Administration Training Courses |
| Exam Registration: | Pearson VUE Certiverse F5 Education Portal |
| Sample Questions: | F5 F5CAB2 Sample Questions |
| Exam Way: | Online proctored (Certiverse) / In-person (Pearson VUE centers) |
| Pre Condition: | No mandatory prerequisites; can take in any order with other F5CAB exams |
| Official Syllabus URL: | https://education.f5.com/exams/big-ip-administration-data-plane-concepts |
F5CAB2問題集を買うとき、支払いが成功したら、お客様は問題集をダウンロードできます。F5CAB2問題集の有効性を確保する為に、F5はF5CAB2問題集のに対して、定期的に検査します。そうすれば、お客様にF5CAB2問題集の最新版を提供できます。
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質問 # 58
The BIG-IP Administrator wants to provide quick failover between the F5 LTM devices that are configured as an HA pair with a single Self IP using the MAC Masquerade feature. The administrator configures MAC masquerade for traffic-group-1 using the following command:
`tmsh modify /cm traffic-group traffic-group-1 mac 02:12:34:56:00:00`
However, the Network Operations team identifies an issue with using the same MAC address across multiple VLANs. As a result, the administrator enables Per-VLAN MAC Masquerade to ensure a unique MAC address per VLAN by running:
`tmsh modify /sys db tm.macmasqaddr_per_vlan value true`
What would be the resulting MAC address on a tagged VLAN with ID 1501? (Choose one answer)
正解：A
質問 # 59
Refer to the exhibit.
During a planned upgrade to a BIG-IP HA pair running Active/Standby, an outage to application traffic is reported shortly after the Active unit is forced to Standby. Reverting the failover resolves the outage. What should the BIG-IP Administrator modify to avoid an outage during the next failover event? (Choose one answer)
正解：B
解説：
In anActive/StandbyBIG-IP design, application availability during failover depends on both units having equivalent data-plane connectivityfor the networks that carry application traffic. Specifically:
* VLANs are bound to specific interfaces (and optionally VLAN tags).
* Floating self IPs / traffic groupsmove to the new Active device during failover.
* For traffic to continue flowing after failover, the new Active device must have thesame VLANs available on the correct interfacesthat connect to the upstream/downstream networks.
What the symptom tells you:
* Traffic works when Device A is Active
* Traffic fails when Device B becomes Active
* Failback immediately restores traffic
This pattern strongly indicates theStandby unit does not have the VLAN connected the same way(wrong physical interface assignment), so when it becomes Active, it owns the floating addresses but cannot actually pass traffic on the correct network segment.
WhyInterface mismatchis the best match:
* If theActiveunit is already working, its interface mapping is correct.
* The fix is to make theStandbyunit's VLAN/interface assignment match the Active unit.
* That corresponds tochanging the Standby device interface to 1.1.
Why theTagoptions are less likely here (given the choices and the exhibit intent):
* Tag issues can also break failover traffic, but the question/options are clearly driving toward the classic HA requirement:consistent VLAN-to-interface mapping on both devicesso the data plane remains functional after the traffic group moves.
Conclusion:To avoid an outage on the next failover, the BIG-IP Administrator must ensure the Standby device uses thesame interface (1.1)for the relevant VLAN(s) that carry the application traffic, so when it becomes Active it can forward/receive traffic normally.
質問 # 60
A BIG-IP Administrator needs to have a BIG-IP linked to two upstream switches for resilience of the external network. The network engineer who is going to configure the switch instructs the BIG-IP Administrator to configure interface binding with LACP. Which configuration should the administrator use?
正解：B
解説：
In BIG-IP terminology, aTrunkis the object used to implement Link Aggregation (IEEE 802.3ad/802.1AX).
When a network engineer refers to "interface binding" or "EtherChannel" with LACP, the BIG-IP equivalent is a Trunk.
* LACP (Link Aggregation Control Protocol):This is a protocol that allows the BIG-IP system to communicate with the upstream switches to negotiate the bundling of multiple physical links into a single logical link.
* Resilience and Redundancy:By creating a trunk that includes interfaces connected to two different switches (typically configured as a VPC, VSS, or MLAG cluster on the switch side), the administrator ensures that the BIG-IP remains reachable even if one physical interface or one switch fails.
* Data Plane Logic:The BIG-IP treats the trunk as a single Layer 2 interface. VLANs are then associated with the trunk rather than individual physical ports.
Why the other options are incorrect:
* Option B:Trunks aggregate physical interfaces. While VLANs are associated with trunks, the trunk configuration itself does not "list" MAC addresses of the switches; it uses LACP to negotiate the connection.
* Options C & D:Virtual Servers are Layer 4-7 objects used for traffic processing and load balancing.
They do not possess "LACP profiles," nor are physical interfaces or management IPs treated as pool members for the purpose of link aggregation.
質問 # 61
An ecommerce company is experiencing latency issues with online shops during Black Friday's peak season. The BIG-IP Administrator detects an overall high CPU load on the BIG-IP device and wants to move the top utilized Virtual Servers to a dedicated BIG-IP device. Where should the BIG-IP Administrator determine the problematic Virtual Servers? (Choose one answer)
正解：B
解説：
When troubleshooting performance and latency issues on BIG-IP, especially under peak load conditions, it is critical to identify which Virtual Servers are consuming the most resources. This is a core data plane analysis task.
BIG-IP provides multiple views of configuration and status, but only certain areas expose real-time and historical traffic statistics that correlate directly with CPU usage and throughput.
Why Option C Is Correct:
Statistics > Module Statistics > Local Traffic > Virtual Servers provides:
Real-time and cumulative statistics per Virtual Server
Metrics such as:
Bits in / Bits out
Packets in / Packets out
Current connections
Connection rate
Total requests
The ability to identify high-traffic or high-connection Virtual Servers, which are the most likely contributors to elevated CPU utilization These statistics allow the administrator to objectively determine which Virtual Servers are the top consumers of system resources and therefore good candidates for migration to a dedicated BIG-IP device.
Why the Other Options Are Incorrect:
A . Local Traffic > Virtual Servers > Virtual Server List
Primarily a configuration view
Does not provide sufficient performance or utilization statistics to identify CPU-heavy Virtual Servers B . System > Platform Displays hardware-level information such as CPU cores, memory, disk, and platform type Does not break down utilization by Virtual Server D . Local Traffic > Network Map Provides a logical topology view of Virtual Servers, pools, and pool members Useful for understanding relationships, but not for identifying high-utilization Virtual Servers Key Data Plane Concept Reinforced:
To diagnose performance problems and plan traffic redistribution, BIG-IP administrators must rely on Module and object-level statistics, not configuration screens. The Virtual Server statistics view is the authoritative location for identifying traffic hotspots that directly impact CPU and latency during peak events such as Black Friday.
質問 # 62
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)
正解：D
解説：
In BIG-IP LTM, health monitors are used to determine the availability of pool members and directly influence traffic flow decisions in the data plane.
Key characteristics of the default HTTP monitor according to BIG-IP Administration Data Plane Concepts:
Sends an HTTP request (typically GET /)
Expects an HTTP response code of 200 OK
Any response other than 200 is treated as a monitor failure
A failed monitor causes the pool member to be marked offline (down)
In this scenario:
Two pool members return 404 Not Found
A 404 response indicates that the requested object was not found
This does not meet the success criteria of the default HTTP monitor
These two members are therefore marked offline
One pool member returns 200 OK
This matches the expected response
The member is marked online
Resulting Pool Member Availability:
2 members: Offline
1 member: Online
Why the Other Options Are Incorrect:
B - 404 responses are not considered healthy by the default HTTP monitor C - At least one member responds with the expected 200 OK D - Members returning 404 responses fail the monitor and cannot be marked online Key Data Plane Concept Reinforced:
BIG-IP health monitors make binary availability decisions based strictly on configured success criteria. For HTTP monitors, response codes matter-404 is a failure, even if the service is technically reachable.
質問 # 63
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