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

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

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Computer Networking
TCP is:

None of these
Connection orientated and reliable
Operates at the Data Link layer
Connectionless and unreliable
Connection orientated and unreliable

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