In a Citrix NetScaler HA pair that must operate across different subnets, which setting enables independent network configuration?

• A. Configure Sync VLAN
• B. Turn on Fail-safe Mode
• C. Turn on HA Monitoring on all Interfaces
• D. Turn on Independent Network Configuration (INC) mode

Answer: (D)

When two Citrix NetScaler units in an HA pair are placed in different subnets, you need each device to manage its own network settings independently. Independent Network Configuration mode lets each appliance keep its own IP addressing, VLANs, and gateway information, so the pair can function across distinct subnets without forcing a shared network configuration. This separation is what makes HA work when the devices aren’t on the same L2 domain, because the network setup on one unit won’t constrain or depend on the other.

The other options don’t provide that per-node autonomy. A Sync VLAN is for configuration replication between the units, which assumes a common network path; Fail-safe mode alters HA resilience but doesn’t enable different subnet networking; HA Monitoring on all Interfaces is about monitoring state and health, not about configuring networks independently.