Drag a concept onto its matching description — or click a concept then click the description.
Concepts
Matches
Layer 2.5
Layer 2
Layer 3
Layer 3
Layer 2
mediumMatchingObjective-mapped
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 OSI layer on the right.
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 (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.
Quick reference
OSI Model Reference
| Layer | Name | PDU | Key Protocols / Devices |
|---|---|---|---|
| 7 | Application | Data | HTTP, HTTPS, DNS, SMTP, FTP, SSH |
| 6 | Presentation | Data | TLS / SSL, JPEG, ASCII encoding |
| 5 | Session | Data | NetBIOS, RPC, SIP |
| 4 | Transport | Segment / Datagram | TCP, UDP |
| 3 | Network | Packet | IP, ICMP, OSPF — Routers |
| 2 | Data Link | Frame | Ethernet, Wi-Fi, PPP — Switches, Bridges |
| 1 | Physical | Bits | Cables, NICs, Hubs, Repeaters |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.