352-001 Question #671: Real Exam Question with Answer & Explanation

The correct answer is B: VRF. VRF (Virtual Routing and Forwarding) provides complete Layer 3 separation by giving each tenant its own independent routing and forwarding table.

Question

Which option is best suited to maintain Layer 3 separation in a multitenant data center design?

Options

AVXLAN
BVRF
CVDC
DVLAN

Explanation

VRF (Virtual Routing and Forwarding) provides complete Layer 3 separation by giving each tenant its own independent routing and forwarding table.

Common mistakes.

A. VXLAN is a Layer 2 overlay encapsulation technology used to extend L2 segments across an L3 fabric and does not inherently provide Layer 3 routing separation between tenants.
C. VDC (Virtual Device Context) is a Cisco Nexus-specific feature that partitions a physical switch into multiple logical devices but operates at the device virtualization level, not specifically at the Layer 3 routing separation level for multitenancy.
D. VLAN provides Layer 2 broadcast domain segmentation only and does not offer Layer 3 routing separation; tenants on separate VLANs can still share the same routing table without additional VRF configuration.

Concept tested. VRF for Layer 3 tenant isolation in data centers

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l3_vpns/configuration/xe-16/mp-l3-vpns-xe-16-book/mp-vrfs.html

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