Computer Networking
A WATS arrangement

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

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Computer Networking
What is a stub network?

A network that has only one entry and exit point.
A network with more than one exit point.
A network with only one entry and no exit point.
A network with more than one exit and entry point.

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