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[Hardware] 100% Pass 2026 F5 Latest F5CAB2: BIG-IP Administration Data Plane Concepts (F5CA

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【Hardware】 100% Pass 2026 F5 Latest F5CAB2: BIG-IP Administration Data Plane Concepts (F5CA

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F5 F5CAB2 Exam Syllabus Topics:
TopicDetails
Topic 1
  • Explain high availability (HA) concepts: This domain addresses HA concepts including integrity methods, implementation approaches, and advantages of high availability configurations.
Topic 2
  • Explain the relationship between interfaces, trunks, VLANs, self-IPs, routes and their status
  • statistics: This domain covers BIG-IP networking components including interfaces, trunks, VLANs, self-IPs, and routes, their dependencies and status, plus predicting traffic paths and egress IPs.
Topic 3
  • Determine expected traffic behavior based on configuration: This domain focuses on predicting traffic behavior based on persistence, processing order, object status, egress IPs, and connection
  • rate limits.
Topic 4
  • Identify the different virtual server types: This domain covers BIG-IP virtual server types: Standard, Forwarding, Stateless, Reject, Performance Layer 4, and Performance HTTP.
Topic 5
  • Define ADC application objects: This domain covers ADC basics including application objects, load balancing methods, server selection, and key ADC features and benefits.

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F5 BIG-IP Administration Data Plane Concepts (F5CAB2) Sample Questions (Q41-Q46):NEW QUESTION # 41
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?
  • A. A Trunk containing an interface connected to each switch
  • B. A virtual server with an LACP profile and the switches' management IPs as pool members
  • C. A virtual server with an LACP profile and the interfaces connected to the switches as pool members
  • D. A Trunk listing the allowed VLAN IDs and MAC addresses configured on the switches
Answer: A
Explanation:
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.

NEW QUESTION # 42
What type of Virtual Server is configured with no Pool-members, and proxies traffic to the destination IP address specified by the client device?
  • A. Standard
  • B. Performance (Layer 4)
  • C. Stateless
  • D. Forwarding (IP)
Answer: D

NEW QUESTION # 43
A BIG-IP Administrator has a cluster of devices.
What should the administrator do after creating a new Virtual Server on device 1? (Choose one answer)
  • A. Synchronize the settings of device 1 to the group
  • B. Create a new cluster on device 1
  • C. Create a new virtual server on device 2
  • D. Synchronize the settings of the group to device 1
Answer: A
Explanation:
Comprehensive and Detailed Explanation (BIG-IP Administration - Data Plane Concepts):
In a BIG-IP device service cluster, configuration objects such as virtual servers, pools, profiles, and iRules are maintained through configuration synchronization (config-sync).
Key BIG-IP concepts involved:
Device Service Cluster (DSC)
A cluster is a group of BIG-IP devices that share configuration data. One device is typically used to make changes, which are then synchronized to the rest of the group.
Config-Sync Direction Matters
Changes are made on a local device
Those changes must be pushed to the group
The correct operation is "Sync Device to Group"
Why C is correct:
The virtual server was created only on device 1
Other devices in the cluster do not yet have this object
To propagate the new virtual server to all cluster members, the administrator must synchronize device 1 to the group Why the other options are incorrect:
A . Synchronize the settings of the group to device 1
This would overwrite device 1's configuration with the group's existing configuration and may remove the newly created virtual server.
B . Create a new cluster on device 1
The cluster already exists. Creating a new cluster is unnecessary and disruptive.
D . Create a new virtual server on device 2
This defeats the purpose of centralized configuration management and risks configuration drift.
Conclusion:
After creating a new virtual server on a BIG-IP device that is part of a cluster, the administrator must synchronize the configuration from that device to the group so all devices share the same ADC application objects.

NEW QUESTION # 44
Refer to the exhibit.



The BIG-IP Administrator needs to avoid overloading any of the pool members with connections when they become active. What should the BIG-IP Administrator configure to meet this requirement? (Choose one answer)
  • A. Same Priority Group to each member
  • B. Slow Ramp Time to the Pool
  • C. Different Ratio for each member
  • D. Action On Service Down to Reselect
Answer: B
Explanation:
Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents:
This question focuses on connection behavior when pool members transition from down to up, which is a classic data plane consideration in BIG-IP environments.
What problem is being solved?
When a pool member:
Recovers from a failure
Is enabled after maintenance
Transitions from inactive to active
...it can suddenly receive a large burst of new connections, especially when using load-balancing methods such as Least Connections. This sudden surge can overload the server.
Why Slow Ramp Time is the correct solution:
Slow Ramp Time is a pool-level setting that:
Gradually increases the number of connections sent to a newly available pool member Prevents sudden spikes in traffic Allows the server to warm up (application cache, JVM, DB connections, etc.) From BIG-IP Administration Data Plane Concepts:
Slow Ramp Time controls the rate at which BIG-IP increases load to a pool member that has just become available During the ramp period, BIG-IP artificially increases the member's connection count, making it appear "busier" and therefore less attractive for new connections This directly satisfies the requirement to avoid overloading pool members when they become active.
Why the Other Options Are Incorrect:
B . Different Ratio for each member
Ratios control relative distribution under normal operation
They do not prevent a sudden surge when a member becomes active
C . Action On Service Down to Reselect
Controls persistence behavior when a member goes down
Has no impact on connection ramp-up when a member comes back online
D . Same Priority Group to each member
Affects failover logic between priority groups
Does not control connection rate or ramp-up behavior
Key Data Plane Concept Reinforced:
To protect backend servers during recovery events, BIG-IP provides Slow Ramp Time, ensuring graceful reintroduction of traffic and preventing connection storms that can occur during high-load scenarios.

NEW QUESTION # 45
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?
  • A. Set the pool member to a Disabled state
  • B. Set the pool member to a Forced Offline state and manually delete existing connections through the command line
  • C. Set the pool member to a Forced Offline state
  • D. Set the pool member to a Disabled state and manually delete existing connections through the command line
Answer: B
Explanation:
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.

NEW QUESTION # 46
......
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