300-320 Question #601: Real Exam Question with Answer & Explanation

The correct answer is D: VXLAN. Cisco ACI (Application Centric Infrastructure) uses VXLAN (Virtual Extensible LAN) as its data plane encapsulation protocol. VXLAN extends Layer 2 networks over a Layer 3 underlay by encapsulating Ethernet frames in UDP packets, allowing ACI to create logical overlay networks dec

Question

An engineer has proposed the deployment of a Cisco fabric solution to introduce automation an zero-touch operation experience to DC is utilized by the ACI to encapsulate the inside the fabric and to virtualize the physical infrastructure

Options

ASTP
BNSX
CIPsec
DVXLAN

Explanation

Cisco ACI (Application Centric Infrastructure) uses VXLAN (Virtual Extensible LAN) as its data plane encapsulation protocol. VXLAN extends Layer 2 networks over a Layer 3 underlay by encapsulating Ethernet frames in UDP packets, allowing ACI to create logical overlay networks decoupled from the physical infrastructure. This enables multi-tenancy and network virtualization across the fabric. STP (A) is a loop-prevention protocol, NSX (B) is VMware's SDN solution, and IPsec (C) is an encryption/tunneling protocol - none of these serve as ACI's fabric encapsulation technology.

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