MEF Software-Defined Wide Area Network (SD-WAN) Practice Exam 2026 - Free SD-WAN Practice Questions and Study Guide

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Which term describes the L2 interface UT/PT or CVLAN X?

SD-WAN UNI IPv4 connection addressing service mechanism

SD-WAN UNI IPv6 connection addressing service mechanism

SD-WAN UNI Maximum L2 Frame size

SD-WAN UNI L2 Interface

The main idea is understanding what defines the boundary at the data-link layer in SD-WAN UNI. The L2 Interface is that boundary—the point where Ethernet frames enter or leave the SD-WAN network. UT/PT or CVLAN X describe how traffic is carried inside that boundary (for example, whether frames are untagged or tagged and how VLAN IDs are used), but they are aspects of the L2 Interface configuration, not the term that names the boundary itself. The other options refer to IP address mechanisms or to a frame-size parameter, which are separate concepts from naming the layer-2 boundary. So the term that best describes the L2 interface is just L2 Interface.