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

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

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

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

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