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F5 Networks F5CAB3 Exam Questions

Exam Name: BIG-IP Administration Data Plane Configuration
Exam Code: F5CAB3
Related Certification(s): F5 Networks F5 Certified Administrator, BIG-IP Certification
Certification Provider: F5 Networks
Number of F5CAB3 practice questions in our database: 76 (updated: Feb. 21, 2026)
Expected F5CAB3 Exam Topics, as suggested by F5 Networks :
  • Topic 1: Apply procedural concepts required to modify and manage virtual servers: This domain covers managing virtual servers including applying persistence, encryption, and protocol profiles, identifying iApp objects, reporting iRules, and showing pool configurations.
  • Topic 2: Apply procedural concepts required to modify and manage pools: This domain addresses managing server pools including health monitors, load balancing methods, priority groups, and service port configurations.
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Margret

2 days ago
Understand the principles of high availability and failover for BIG-IP devices. Know how to configure device groups and traffic groups.
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Marisha

10 days ago
Exam may test your knowledge of SSL/TLS termination and client certificate authentication on the BIG-IP. Review SSL profile configurations.
upvoted 0 times
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Cordelia

17 days ago
I felt overwhelmed by the data plane specifics at first. PASS4SUCCESS clarified the concepts with hands-on practice, helping me grow confident bite by bite. Stay steady and keep practicing—your moment is near.
upvoted 0 times
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Micaela

24 days ago
The exam experience focusing on virtual servers was intense, as I navigated through configuring virtual servers with iRules integration and persistence profiles; I passed with help from Pass4Success practice questions that highlighted the exact sequence for creating and modifying virtual servers. One question that stuck with me involved selecting the correct virtual server binding to a pool across a multi-tenant setup, and I was unsure whether the binding should be at the HTTP or TCP profile layer for optimal traffic distribution, yet I still managed to finalize the exam with confidence after cross-checking the pool association steps.
upvoted 0 times
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Leandro

1 month ago
Be prepared for questions on creating and managing virtual servers. Familiarize yourself with load balancing methods and client connection persistence.
upvoted 0 times
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Cammy

1 month ago
Initial jitters about F5 terminology and configurations had me doubting. PASS4SUCCESS broke it down step by step and built real test-ready confidence. Believe in your prep and go for it—you can achieve this.
upvoted 0 times
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Coleen

2 months ago
I was nervous at the start, unsure if I could keep up with the data plane details. PASS4SUCCESS gave me structured practice, clear explanations, and a confidence boost that turned anxiety into readiness. You’ve got this—stay focused and trust the process.
upvoted 0 times
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Charisse

2 months ago
Passing the F5 BIG-IP exam was a breeze with PASS4SUCCESS practice exams - they really helped me nail the data plane configuration!
upvoted 0 times
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Claudio

2 months ago
I recently sat the BIG-IP Administration Data Plane Configuration exam and, with steady focus on the pool management concepts, I managed to pass thanks to Pass4Success practice questions that helped reinforce the steps for modifying and managing pools; there was a particular question about how to adjust pool members based on load balancing methods that I was unsure about at first, but I reviewed the related pool and health monitor settings and stayed confident enough to answer correctly. The exam asked me to describe a scenario where a pool member is marked down and how the pool reweights the remaining members, complicating a situation where a failover threshold needed to be maintained, and I wrestled with choosing the right action sequence before the pass.
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Dylan

2 months ago
Expect questions on configuring VLAN and Trunk settings for BIG-IP network interfaces. Understand VLAN tagging and untagged traffic handling.
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Free F5 Networks F5CAB3 Exam Actual Questions

Note: Premium Questions for F5CAB3 were last updated On Feb. 21, 2026 (see below)

Question #1

All pool members are online. All other virtual server settings are at default.

What might alter the load balancing behavior? (Choose one answer)

Reveal Solution Hide Solution
Correct Answer: D

By default, BIG-IP load balancing algorithms (such as Round Robin) distribute connections evenly across all available pool members. However, persistence profiles override normal load balancing decisions by forcing subsequent connections from a client to be sent to the same pool member.

According to the BIG-IP Administration: Data Plane Configuration documentation:

Persistence creates a client-to-server mapping that is honored before load balancing algorithms are applied.

When persistence is enabled, BIG-IP may repeatedly select the same pool member even if others are available.

This directly alters load balancing behavior.

Why the other options are incorrect:

A . Adding a OneConnect profile

OneConnect optimizes server-side TCP connections but does not change which pool member is selected.

B . Enabling SNAT automap

SNAT affects source address translation, not pool member selection.

C . Enabling a fallback host in the HTTP profile

A fallback host is only used when no pool members are available.

Correct Resolution:

Adding a persistence profile alters load balancing behavior by maintaining client affinity to a specific pool member.


Question #2

A BIG-IP Administrator creates a new Virtual Server to load balance SSH traffic. Users are unable to log on to the servers.

What should the BIG-IP Administrator do to resolve the issue?

Reveal Solution Hide Solution
Correct Answer: B

SSH is a TCP Layer 4 protocol. Applying an HTTP profile causes BIG-IP to expect HTTP headers, breaking SSH sessions. Removing the HTTP profile allows raw TCP forwarding.


Question #3

A Standard Virtual Server reports poor network performance for Internet-based clients.

What configuration should be applied?

Reveal Solution Hide Solution
Correct Answer: A

WAN TCP profiles are optimized for high latency and packet loss typical of Internet clients, while LAN profiles are ideal for backend servers.


Question #4

Refer to the exhibit.

DNS queries from two internal DNS servers are being load-balanced to external DNS servers via a virtual server on a BIG-IP device. The DNS queries originate from:

192.168.10.100

192.168.10.200

and target:

192.168.2.150

All DNS queries destined for the external DNS servers fail.

Which property change should the BIG-IP Administrator make in the Virtual Server to resolve this issue? (Choose one answer)

Reveal Solution Hide Solution
Correct Answer: D

DNS traffic is primarily transported using UDP port 53. In the exhibit, the Virtual Server is configured with the Protocol set to TCP, which prevents standard DNS queries from being processed correctly. BIG-IP Virtual Servers must be configured with the correct Layer 4 protocol to match the application traffic they are handling.

According to the BIG-IP Administration: Data Plane Configuration documentation:

The Protocol setting on a Virtual Server defines whether traffic is processed as TCP, UDP, or another supported transport protocol.

Standard DNS queries and responses use UDP, while TCP is only required for DNS zone transfers (AXFR) or exceptionally large responses.

When a DNS Virtual Server is incorrectly configured with TCP, UDP-based DNS queries are dropped, causing all requests to fail.

Why the other options are incorrect:

A . Protocol profile (Client) to DNS_OPTIMIZED

A DNS profile enhances DNS functionality but does not correct an incorrect transport protocol configuration.

B . Type to Performance (HTTP)

Performance (HTTP) Virtual Servers are designed for HTTP traffic and are not suitable for DNS services.

C . Source Address to 192.168.10.0/24

The existing source IPs already fall within the allowed range, so this setting does not address the failure.

Correct Resolution:

Changing the Protocol to UDP aligns the Virtual Server with standard DNS transport requirements, allowing DNS queries to be successfully processed and load-balanced.


Question #5

Users are unable to reach an application. The Virtual Server shows a red diamond status.

What is the cause?

Reveal Solution Hide Solution
Correct Answer: A

A red diamond indicates that the Virtual Server is enabled but unavailable, typically due to all pool members being down.


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