Computer Networking
Demodulation is the process of

converting analog signals to digital signals
combining many low speed channels into one high speed channel
converting digital signals to analog signals
None of these
dividing the high-speed signals into frequency bands

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

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

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