Computer Networking
Which of the following types of connections can use full duplex?1. Hub to hub2. Switch to switch3. Host to host4. Switch to hub5. Switch to host

3 and 4
1, 2 and 4
3 and 5
2, 3 and 5

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Computer Networking
A WATS arrangement

None of these
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
is always less expensive than flat-rate service

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Computer Networking
Bus is

the condition when two or more stations attempt to use the same channel at the same time
a collection of interconnected functional units that provides a data communications service among stations attached to the network
None of these
a continuous frequency capable of being modulated or impressed with a second signal
one or more conductors that some as a common connection for a related group of devices

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