Answer Posted / sandeep
Frame Relay is a high-performance WAN protocol that
operates at the physical and data link layers of the OSI
reference model. Frame Relay originally was designed for
use across Integrated Services Digital Network (ISDN)
interfaces. Today, it is used over a variety of other
network interfaces as well. This chapter focuses on Frame
Relay's specifications and applications in the context of
WAN services.
Frame Relay is an example of a packet-switched technology.
Packet-switched networks enable end stations to dynamically
share the network medium and the available bandwidth. The
following two techniques are used in packet-switching
technology:
•Variable-length packets
•Statistical multiplexing
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