350-401 Practice Question: Drag and drop each WAN technology on the left to…

Drag and drop each WAN technology on the left to its matching layer on the right.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Layer 2.5

Layer 2

Layer 3 and above

Layer 3

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

MPLS: Layer 2.5

MPLS operates at Layer 2.5 (shim header between Layer 2 and Layer 3). Metro Ethernet is a Layer 2 technology. SD-WAN abstracts the underlay and operates at Layer 3 and above. DMVPN is a Layer 3 VPN overlay.

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Same concept, more angles

1 more way this is tested on 350-401

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. Drag and drop each WAN technology on the left to its matching OSI layer on the right.

medium

✓ P1.MPLS: Layer 2.5
✓ P2.Metro Ethernet: Layer 2
✓ P3.SD-WAN: Layer 3
✓ P4.DMVPN: Layer 3
✓ P5.Frame Relay: Layer 2

Why P1: MPLS operates at Layer 2.5 (between Layer 2 and Layer 3). Metro Ethernet is a Layer 2 technology. SD-WAN is a Layer 3 overlay technology. DMVPN is a Layer 3 VPN technology.

Last reviewed: Jun 18, 2026

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