You are the Cisco Network Designer in Cisco.com. In your company site， a NAS is both physicall yand logically in the traffic path. The NAS identifies clients solely based on their MAC addresses. Inwhich access mode has this NAS been configured to operate？（）

• A、 Layer 2 mode
• B、 Layer 2 Edge mode
• C、 Layer 3 mode
• D、 Layer 3 In-Band mode