F5 F5CAB2 Exam With Confidence Using Practice Dumps

In a BIG-IP high availability (HA) configuration,Auto-Syncis a device trust feature that automatically synchronizes configuration changesfrom the Active device to the Standby devicewithin a Sync-Failover device group.

Key principles from BIG-IP Administration Data Plane Concepts:

TheActive device is always the authoritative source of configuration

Configuration changes are intended to be madeonly on the Active device

WithAuto-Sync enabled, any time the Active device configuration changes, the system automatically pushes the configuration to all Standby members of the device group

Configuration changes made directly on aStandby device are not preserved

In this scenario:

The administrator modifies a Virtual Server on theStandbydevice

That change islocal onlyand does not alter the device group’s synchronized configuration

When Auto-Sync next runs (triggered by a change on the Active device or an internal sync event), theActive device configuration overwrites the Standby configuration

As a result, the configuration change made on the Standby device isundone.

Why the Other Options Are Incorrect:

A– The change is not undone only when another change is made; it is undone during the next Auto-Sync operation

B– Changes made on the Standby device are never propagated to the Active device

D– Auto-Sync does not merge or promote Standby changes into the HA pair configuration

Best Practice Reinforced:

Always perform configuration changes on theActive BIG-IP devicewhen Auto-Sync is enabled to ensure consistent and predictable HA behavior.

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In the F5 BIG-IP ecosystem, atrunkis a logical grouping of two or more physical interfaces that the system treats as a single data path. This configuration is based on the Link Aggregation Control Protocol (LACP) or static link aggregation.

Trunks provide two primary benefits to the data plane:

Increased Bandwidth:By aggregating multiple physical interfaces (e.g., combining two 10Gbps interfaces), the aggregate throughput of the logical connection is increased. This allows the BIG-IP to handle higher traffic volumes than a single interface could support.

Link Redundancy:Trunks provide high availability at the physical layer. If one physical interface within the trunk fails or the cable is disconnected, the BIG-IP system automatically redistributes traffic across the remaining active interfaces in the trunk. This prevents a single cable or port failure from causing a network outage.

Why the other options are incorrect:

Option C:While VLAN tags are often usedontrunks, the ability to use tagged VLANs is a property of theVLANconfiguration and 802.1Q tagging, not the trunk itself. A single interface can support tagged VLANs without being part of a trunk.

Option D:Trunks are agnostic to the type of application traffic (such as VoIP) passing through them. They operate at Layer 2 to provide a reliable pipe for any Layer 3+ traffic.

In BIG-IP LTM, aWildcardvirtual server is defined by using a destination IP address of 0.0.0.0. These virtual servers are designed to handle traffic that does not match any more specific Virtual Server destination address.

0.0.0.0 Destination:This address acts as a "catch-all" for IP traffic.

VLAN Specificity:While the destination address is generic, a Wildcard virtual server is typically restricted to a specificVLAN(such as the Internal VLAN) to process outbound traffic from backend servers.

Service Ports:A wildcard virtual server can be configured for a specific port (e.g., 0.0.0.0:80) or for all ports (0.0.0.0:0).

Data Plane Usage:It is commonly used for transparently intercepting outbound traffic for the purpose of Source NAT (SNAT), bandwidth shaping, or directing traffic to a gateway pool.