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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 |
| Related Certifications: | F5 Certified Administrator, BIG-IP |
| Passing Score: | Not officially disclosed |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Real Exam Qty: | 30 |
| Recommended Training: | BIG-IP Administration Training Courses |
| Exam Registration: | Certiverse F5 Education Portal Pearson VUE |
| 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 |
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NEW QUESTION # 64
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)
Answer: C
Explanation:
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.
NEW QUESTION # 65
Refer to the exhibit above.
A BIG-IP pool is configured withPriority Group Activation = Less than 2 available members. The pool members have different priority groups and availability states. Which pool members arereceiving traffic?
(Choose one answer)
Answer: A
Explanation:
This question tests understanding ofPriority Group Activation (PGA)and how BIG-IP determines which pool members are eligible to receive traffic.
Key BIG-IP Priority Group Concepts:
* Higher priority group numbers = higher priority
* BIG-IP willonly send traffic to the highest priority groupthat meets thePriority Group Activation condition
* Lower priority groups areactivated only when the condition is met
* Onlyavailable (green)members count toward the activation threshold
Configuration from the Exhibit:
* Priority Group Activation:Less than 2 available members
* Pool Members and Status:
Pool Member
Priority Group
Status
serv1
2
Active (available)
serv2
2
Inactive (down)
serv3
1
Active (available)
serv4
1
Active (available)
Step-by-Step Traffic Decision:
* BIG-IP first evaluates thehighest priority group (Priority Group 2)
* Priority Group 2 has:
* serv1 # available
* serv2 # unavailable
* Total available members = 1
* Activation rule isLess than 2 available members
* Condition istrue(1 < 2)
* BIG-IPactivates the next lower priority group (Priority Group 1)
* Traffic is now sent to:
* serv1 (Priority Group 2)
* serv3 and serv4 (Priority Group 1)
Final Result:
Traffic is distributed toserv1, serv3, and serv4
Why the Other Options Are Incorrect:
* A- Ignores activation of the lower priority group
* B- serv4 is also active and eligible
* C- serv2 is down and cannot receive traffic
Key Data Plane Concept Reinforced:
Priority Group Activation controls when lower-priority pool members are allowed to receive traffic, based strictly on the number ofavailable membersin the higher-priority group. In this case, the failure of one high-priority member caused BIG-IP toexpand traffic distributionto lower-priority members to maintain availability.
NEW QUESTION # 66
A virtual server is listening at 10.10.1.100:80 and has the following iRule associated with it:
when HTTP_REQUEST { if { [HTTP::header UserAgent] contains "MSIE" }
{ pool MSIE_pool }
else { pool Mozilla_pool }
If
a user connects to http://10.10.1.100/foo.html and their browser does not specify a UserAgent, which pool will receive the request?
Answer: D
NEW QUESTION # 67
Which virtual server type is being configured in the screenshot? (Choose one answer.)
Answer: B
Explanation:
The configuration shown matches a Performance Layer 4 virtual server because it is explicitly using a FastL4 profile:
* The screenshot shows Protocol: TCP and Protocol Profile (Client): fastL4.In BIG-IP data plane terms, FastL4 is the hallmark of a Performance (Layer 4) virtual server, designed to process connections at Layer 4 with minimal overhead (high throughput/low latency) compared to full proxy L7 processing.
* The screenshot also shows HTTP Profile (Client): None (and HTTP server profile effectively not in use).A Standard virtual server commonly uses full-proxy features and frequently includes L7 profiles (like HTTP) when doing HTTP-aware load balancing, header manipulation, cookie persistence, etc. In contrast, a Performance L4 virtual server typically does not use an HTTP profile because it is not doing HTTP-aware (Layer 7) processing.
* It is not a Forwarding IP virtual server:A Forwarding (IP) virtual server is used to route/forward packets (often without load balancing to pool members in the same way as Standard/Performance VS) and is selected by choosing a forwarding type. The presence of a TCP protocol with a FastL4 client profile aligns with a Layer 4 load-balancing style virtual server, not a packet-forwarding virtual server type.
Conclusion: Because the configuration is TCP-based and explicitly uses fastL4 with no HTTP profile, the expected BIG-IP virtual server type is Performance Layer 4 (Option C).
NEW QUESTION # 68
Which statement is true concerning the default communication between a redundant pair of BIG-IP devices?
Answer: B
Explanation:
Redundant BIG-IP systems (HA pairs) must maintain constant communication to monitor the health of the peer and synchr15onize states.16
* Heartbeats: By default, even with a serial cable, th17e BIG-IP systems exchange "heartbeat" packets over the network to determine if the peer is still alive.
* Network Failover: This involves the exchange of UDP packets (typically on port 1026) at regular intervals.
* Device Service Clustering (DSC): Modern BIG-IP versions use the Central Management (cm) infrastructure to communicate configuration status and sync status constantly.
* Clarification on others: Port lockdown does affect HA communication if misconfigured (A is false).
Mirroring uses separate channels (B is false). Mirroring is never sent over the serial cable because it requires high bandwidth (D is false).
NEW QUESTION # 69
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