CRC
Cyclical Redundancy Check
A mathematical technique used to check for errors when sending data by modem. Because some phone lines are notoriously crackly and can cause breaks in transmission, this is a crucial step. If the CRC fails to add up, the receiving end of a data transmission sends a NAK (Negative Acknowledgement) signal back to the sending modem until it does add up. CRCs are also used in tape backups and other streaming communications.
NetLingo Classification: Technical Terms
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