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| Certification Vendor: | F5 |
|---|---|
| Exam Name: | BIG-IP Administration Data Plane Concepts |
| Exam Number: | F5CAB2 |
| Passing Score: | Pass/Fail (Scaled scoring, specific threshold not publicly disclosed per sub-exam) |
| Exam Price: | $50 USD |
| Exam Duration: | 30 minutes |
| Available Languages: | English |
| Exam Format: | Multiple Choice, Scenario-based |
| Real Exam Qty: | 30 |
| Related Certifications: | F5 Certified Administrator, BIG-IP (F5-CA) |
| 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 |
It-PassportsはF5のF5CAB2認定試験に対して問題集を提供しておるサイトで、現場のF5のF5CAB2試験問題と模擬試験問題集を含みます。ほかのホームページに弊社みたいな問題集を見れば、あとでみ続けて、弊社の商品を盗作することとよくわかります。It-Passportsが提供した資料は最も全面的で、しかも更新の最も速いです。
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質問 # 63
Which of the following lists the order of preference from most preferred to least preferred when BIG-IP processes and selects a virtual server? (Choose one answer)
正解：B
解説：
The BIG-IP system uses a specific precedence algorithm to determine which virtual server (listener) should process an incoming packet when multiple virtual servers might match the criteria. Since BIG-IP version
11.3.0, the system evaluates three primary factors in a fixed order of importance:
* Destination Address: The system first looks for the most specific destination match. A "Host" address (mask /32) is preferred over a "Network" address (mask /24, /16, etc.), which is preferred over a
"Wildcard" (0.0.0.0/0).
* Source Address: If multiple virtual servers have identical destination masks, the system then evaluates the source address criteria. Again, a specific source host match is preferred over a source network or a wildcard source.
* Service Port: Finally, if both destination and source specifications are equal, the system checks the port. A specific port match (e.g., 80) is preferred over a wildcard port (e.g., or 0).
Following this logic, a virtual server configured with a specific destination host, a specific source host, and a specific service port represents the highest level of specificity and thus the highest preference.
質問 # 64
What is required for a virtual server to support clients whose traffic arrives on the internal VLAN and pool members whose traffic arrives on the external VLAN?
正解：A
解説：
4647
Virtual Servers have a setting called VLAN and Tunnel Traffic which defines where the BIG-IP "listens" for new connections.4849 Ingress Logic: A virtual server is an entry point. It must be enab50led on the VLAN where the Client resides. If a client is on the "51Internal" VLAN, the Virtual Server must be enabled there to receive the traffic.
Egress Logic: The BIG-IP system uses the TMM Routing Table and Self-IPs to reach pool members. It does not need the Virtual Server to be "enabled" on the destination VLAN (External) to send traffic there.
Default Behavior: By default, Virtual Servers are enabled on "All VLANs." However, if restricted for security, the administrator must ensure the Virtual Server is active on the client-facing (ingress) VLAN.
質問 # 65
A development team needs to apply a software fix and troubleshoot one of its servers. The BIG-IP Administrator needs to immediately remove all connections from the BIG-IP system to the back-end server.
The BIG-IP Administrator checks the Virtual Server configuration and finds that a persistence profile is assigned to it. What should the BIG-IP Administrator do to meet this requirement?
正解：C
解説：
Managing the lifecycle of a pool member requires understanding the difference between "Disabled" and
"Forced Offline" states, especially when persistence is involved.
* Disabled (User-Disabled): This state allows existing connections and persistent sessions to continue until they naturally time out or are closed by the client/server. It only preventsnewsessions from being established.
* Forced Offline: This state is more restrictive; it allows existing connections to complete butrejectsall new connections, including those with existing persistence records.
* Immediate Removal: Neither "Disabled" nor "Forced Offline" will instantly kill currently active, established TCP connections. To meet the requirement of "immediately" removing all connections, the administrator must first set the member toForced Offline(to prevent persistence from bringing in new traffic) and then use the command line (e.g., tmsh delete sys connection ss-server-addr [IP]) to clear the current connection table entries.
質問 # 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?
正解：B
質問 # 67
A BIG-IP Administrator is informed that traffic on interface 1.1 is expected to increase beyond the maximum bandwidth capacity of the link. There is a single VLAN on the interface.
What should the BIG-IP Administrator do to increase the total available bandwidth? (Choose one answer)
正解：B
解説：
On BIG-IP systems, physical interface bandwidth is fixed by the link speed (for example, 1GbE or 10GbE).
When traffic demand exceeds the capacity of a single interface, BIG-IP provides link aggregation through trunks.
Key concepts involved:
* InterfacesA single physical interface (such as 1.1) is limited to its negotiated link speed. You cannot exceed this capacity through software tuning alone.
* Trunks (Link Aggregation)A trunk combines multiple physical interfaces into a single logical interface.
* BIG-IP supports LACP and static trunks.
* Traffic is distributed across member interfaces, increasing aggregate bandwidth and providing redundancy.
* VLANs are then assigned to the trunk, not directly to individual interfaces.
Why option B is correct:
* Creating a trunk with two interfaces allows BIG-IP to use both physical links simultaneously.
* This increases total available bandwidth (for example, two 10Gb interfaces # up to 20Gb aggregate capacity).
* This is the documented and supported method for scaling bandwidth on BIG-IP.
Why the other options are incorrect:
* A. Increase the MTUMTU changes affect packet size and efficiency, not total bandwidth capacity.
* C. Assign two interfaces to the VLANBIG-IP does not support assigning a VLAN to multiple interfaces directly. VLANs must be associated with one interface or one trunk.
* D. Set the media speed manuallyMedia speed can only be set up to the physical capability of the interface and connected switch port. It cannot exceed the hardware limit.
Conclusion:
To increase total available bandwidth on BIG-IP when a single interface is insufficient, the administrator must create a trunk object with multiple interfaces and move the VLAN onto the trunk. This aligns directly with BIG-IP data plane design and best practices.
質問 # 68
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