Computer Networking
Which of the following summation operations is performed on the bits to check an error-detecting code?

Checksum
Attenuation
Coder-decoder
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Codec

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Computer Networking
Synchronous protocols

transmit characters one at a time
are generally used by personal computers
allow faster transmission than asynchronous protocols do
None of these
are more reliable

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