Which technology would you choose for WAN connections that use virtual circuits and require sharing connectivity among multiple sites?

Which technology would you choose for WAN connections that use virtual circuits and require sharing connectivity among multiple sites?

• A. Frame Relay
• B. Ethernet
• C. DSL
• D. Cable Modem

Answer: (A)

WAN connections that rely on virtual circuits and sharing connectivity among multiple sites are best served by Frame Relay. This technology is designed to run over a carrier’s public network and establish logical, virtual paths between locations. It uses permanent virtual circuits (PVCs) or switched virtual circuits to create dedicated logical connections that multiple sites can share over the same physical link. Each virtual circuit is identified and routed via data-link connection identifiers (DLCIs), enabling efficient, scalable networking across many sites without dedicated physical lines for every pair of locations. In contrast, Ethernet is mainly a LAN technology (and Metro Ethernet for wider use), while DSL and Cable Modem are consumer-style last-mile options not built around the concept of shared virtual circuits for multiple sites. That combination of virtual circuits and multi-site sharing is what makes Frame Relay the appropriate choice.

WAN connections that rely on virtual circuits and sharing connectivity among multiple sites are best served by Frame Relay. This technology is designed to run over a carrier’s public network and establish logical, virtual paths between locations. It uses permanent virtual circuits (PVCs) or switched virtual circuits to create dedicated logical connections that multiple sites can share over the same physical link. Each virtual circuit is identified and routed via data-link connection identifiers (DLCIs), enabling efficient, scalable networking across many sites without dedicated physical lines for every pair of locations. In contrast, Ethernet is mainly a LAN technology (and Metro Ethernet for wider use), while DSL and Cable Modem are consumer-style last-mile options not built around the concept of shared virtual circuits for multiple sites. That combination of virtual circuits and multi-site sharing is what makes Frame Relay the appropriate choice.