Computer Networking
An error detecting code is which code is the remainder resulting from dividing the bits to be checked by a predetermined binary number, is known as

Error rate
Error detecting code
Cyclic redundancy check
None of these
Checksum

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Computer Networking
HDLC (High-level Data Link Control) is

a very common bit-oriented data link protocol issued by ISO.
a method of determining which device has access to the transmission medium at any time
None of these
a method access control technique for multiple-access transmission media
network access standard for connecting stations to a circuit-switched network

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