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

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

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Computer Networking
ICMP (Internet Control Message Protocol) is

a protocol that handles error and control messages
a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another
None of these
a protocol used to monitor computers

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