Computer Networking
The interactive transmission of data within a time sharing system may be best suited to

half-duplex lines
biflex-line
None of these
simplex lines
full-duplex lines

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Computer Networking
A WATS arrangement

is never less expensive than flat-rate service
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

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