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| Certification Vendor: | F5 Networks |
|---|---|
| Exam Name: | F5 Certified BIG-IP Administrator: Data Plane Configuration |
| Exam Number: | F5CAB3 |
| Related Certifications: | F5 Certified BIG-IP Administrator (F5-CA) F5 Certified Specialist, Data Plane Configuration |
| Passing Score: | 247 out of 350 (approximately 70%) |
| Real Exam Qty: | 60-80 |
| Available Languages: | English |
| Exam Price: | $160 USD |
| Exam Duration: | 120 minutes |
| Exam Format: | Build List, Multiple Select, Multiple Choice |
| Certificate Validity Period: | 2 years |
| Sample Questions: | F5 F5CAB3 Sample Questions |
| Exam Way: | Online proctored or test center |
| Pre Condition: | Recommended: F5 Certified Administrator certification or equivalent experience with BIG-IP LTM |
| Official Syllabus URL: | https://www.f5.com/go/certification |
>> F5CAB3 Zertifizierungsfragen <<
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| Thema | Einzelheiten |
|---|---|
| Thema 1 |
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| Thema 2 |
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30. Frage
How can a BIG-IP Administrator identify a configuration object that has been configured within an iApp?
Antwort: B
Begründung:
In F5 BIG-IP systems, an iApp is a template-driven framework used to deploy and manage application- specific configurations. When an iApp is deployed, the system creates a specialized folder or " Application Service " container to hold all the resulting Local Traffic Manager (LTM) objects, such as virtual servers, pools, and profiles. This container is visually and programmatically identified by the .app extension in its path name.
The naming convention for these objects follows a specific hierarchical structure: / < partition > / < iapp_name > .app/ < object_name > . For example, if an administrator creates an iApp named " testhttp " in the " /Common " partition, the virtual server created by that iApp would be identified in the configuration (TMSH) and the GUI as /Common/testhttp.app/testhttp. This structure allows the BIG-IP system to distinguish between manually created objects and those managed by the iApp ' s automation logic.
This identification is crucial because iApp-managed objects typically have Strict Updates enabled, which prevents administrators from making direct manual changes to the object settings outside of the iApp ' s reconfigure interface. Attempting to modify such an object directly will result in an error message stating that the application service must be updated using an application management interface. By recognizing the .app path and the repeated name within the structure, an administrator can immediately identify that the object belongs to an iApp and should be managed through the iApp ' s specific management screen rather than standard LTM configuration menus.
31. Frage
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 192.168.101.100 and 192.168.101.200 and target
192.168.21.50 .
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?
Antwort: B
Begründung:
The virtual server is configured for destination 192.168.21.50 , service port 53 , but its Protocol is TCP .
Standard DNS query traffic is normally sent using UDP port 53 . Because virtual-server traffic matching includes the configured IP protocol, UDP DNS packets will not match a virtual server configured exclusively for TCP, causing the queries to fail.
F5 ' s DNS configuration guidance explicitly instructs administrators creating a DNS query virtual server to configure service port 53 and select UDP as the protocol. F5 also recommends separate TCP and UDP virtual servers when both forms of DNS traffic must be supported; TCP port 53 is particularly relevant for operations such as DNS zone transfers.
Option C is not required. The existing source network 192.168.100.0/23 spans addresses from 192.168.100.0 through 192.168.101.255, so both 192.168.101.100 and 192.168.101.200 are already permitted by the source- address criterion. F5 documents that the Source Address setting can specify the network from which a virtual server accepts traffic.
Therefore, changing the virtual server ' s Protocol from TCP to UDP corrects the traffic-matching problem.
Reference Topics: Virtual Server traffic matching; Protocol selection; DNS over UDP/TCP; Source Address matching; Service Port 53.
32. Frage
Refer to the exhibit.
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? (Choose one answer)
Antwort: C
Begründung:
SSH is a Layer 4 TCP-based protocol that operates on TCP port 22 and does not use HTTP in any capacity. In the exhibit, the Virtual Server is configured with an HTTP Profile applied, which is inappropriate for SSH traffic and causes connection failures.
According to the BIG-IP Administration: Data Plane Configuration documentation:
An HTTP profile must only be applied to Virtual Servers handling HTTP or HTTPS traffic.
When an HTTP profile is attached, BIG-IP expects HTTP headers and attempts to parse application-layer data.
Non-HTTP protocols such as SSH, FTP (control), SMTP, and other raw TCP services will fail if an HTTP profile is enabled.
Why the other options are incorrect:
A . Set Protocol to UDP
SSH uses TCP, not UDP. Changing the protocol would break SSH entirely.
B . Set Source Address to 10.1.1.2
The source address setting controls client access restrictions and is unrelated to protocol parsing issues.
C . Set Destination Address/Mask to 0.0.0.0/0
The destination address is already valid for a specific SSH service and does not impact protocol handling.
Correct Resolution:
The BIG-IP Administrator should remove the HTTP Profile (set it to None) so the Virtual Server functions as a pure Layer 4 TCP service, allowing SSH connections to pass through successfully.
33. Frage
What is the status of a pool member when manual resume is enabled and a health check first fails and then passes?
Antwort: D
Begründung:
With manual resume enabled, BIG-IP does not automatically return a pool member to service after recovery. The member remains offline until manually re-enabled.
34. Frage
A BIG-IP Administrator configures an SSH pool with five members.
Which health monitor should be applied?
Antwort: B
Begründung:
SSH is a TCP-based service. A TCP monitor validates service availability without requiring application-layer inspection.
35. Frage
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