Computer Networking
To avoid transmission errors, a check figure is calculated by the

both A and B
receiving computer
transmitting computer
None of these
Start and stop bit

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

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

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Computer Networking
A T-switch is used to

None of these
echo every character that is received
transmit characters one at a time
rearrange the connections between computing equipment
control how messages are passed between computers

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