In SD-WAN terminology, what does TVC stand for and what is its purpose?

• A. TVC stands for Tunnel Virtual Connection and it is used to forward traffic across the SD-WAN
• B. TVC stands for Tapped Virtual Circuit and it monitors traffic
• C. TVC stands for Transport VLAN Channel
• D. TVC stands for Transit Validation Check

Answer: (A)

In SD-WAN, traffic travels over a tunnel-based overlay, and the Tunnel Virtual Connection is the logical path that carries that traffic across the SD-WAN fabric. Its purpose is to encapsulate and forward user traffic between endpoints (such as branch edge devices and data centers or orchestration points) over diverse transport networks—MPLS, Internet, or cellular—while enabling centralized policy, encryption, QoS, and dynamic path selection. This makes the TVC the mechanism that actually moves data across the WAN, rather than simply monitoring, labeling, or validating traffic.