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What is true about frame-relay DLCI?
A.) DLCI represents a single physical circuit
B.) DLCI is optional in all frame-relay networks
C.) DLCI identifies a logical connection between DTE devices
D.) DLCI is used to tag the beginning of a frame with VLAN
information
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Answer: C
Data Link Connection Identifier (DLCI). A frame-relay
service provider
typically assigns DLCI values that are used by frame-relay to
distinguish between different virtual circuits on the
network. For the
IP devices at each end of a virtual circuit to communicate,
their IP
addresses are mapped to Dlci. Every DLCI value can have a
global or
local meaning.
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