In a network where a Citrix ADC has one network interface to the client network and another to the server network and all traffic flows through the appliance, what deployment type is this?

• A. Direct server return
• B. One-arm
• C. Bridge mode
• D. Two-arm

Answer: (D)

Understanding how traffic is steered through the Citrix ADC is key. A two-arm deployment places the ADC between two separate networks using two interfaces: one toward the client network and one toward the server network. Because both sides are directly connected to the appliance and the traffic path goes through the ADC, every client request and the corresponding server response traverses the device. That inline positioning is exactly what the described setup requires, where all traffic flows through the appliance.

In contrast, a direct server return arrangement would have the server responses bypassing the ADC, so not all traffic would go through the appliance. A one-arm deployment typically uses a single interface with traffic routed or NAT’ed through the existing network, not a dedicated inline path between two networks. Bridge mode places the ADC in a transparent layer-2 position and doesn’t establish the same inline routing path between two distinct networks.