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A means of providing access to the Frame Relay network over a DSL connection
Frame Relay is a packet-switching technology. It works by sending information in packets, which are called frames, through a shared frame-relay network.
Both ATM and Frame Relay are ways to connect your local network router to an ISP
No. Frame Relay is not operating at Layer 3. Frame Relay is strictly a Layer 2 protocol suite, whereas X.25 provides services at Layer 3 (the network layer) as well. This enables Frame Relay to offer higher performance and greater transmission efficiency.
FECN
inverse ARP
LMI protocol, Invers ARP
show frame-relay map
Frame relay.
Your materials are out of date. No-one much uses Frame Relay or leased line these days, and ISDN has essentially vanished except for maybe a few antique lines. Find something better to study.
no