Computer Networking
RS-232-G

None of these
is an interface between two data circuit terminating equipment as examplified by a local and remote modem
requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
specifies only the mechanical characteristics of an interface by providing a 25-pin connector
is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment

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

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

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