Computer Networking
Which of the following conditions is used to transmit two packets over a medium at the same time?

Collision
Synchronous
Asynchronous
None of these
Contention

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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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