Computer Networking
A WATS arrangement

is always less expensive than flat-rate service
is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
None of these
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is never less expensive than flat-rate service

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Computer Networking
You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?

Router(config-if)# encapsulation frame-relay q933a
Router(config-if)# encapsulation frame-relay ansi
Router(config-if)# encapsulation frame-relay cisco
Router(config-if)# encapsulation frame-relay ietf

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Computer Networking
The physical layer, in reference to the OSI model, defines

data link procedures that provide for the exchange of data via frames that can be sent and received
All of these
None of these
the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service

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