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Frame check sequence
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<p>A frame check sequence (FCS) is an <a href="/facts/Error-detecting_code/o2rH8e3n">error-detecting code</a> added to a <a href="/facts/Frame_(networking)/ltGCbJIq">frame</a> in a <a href="/facts/Communication_protocol/5uady7cB">communication protocol</a>. Frames are used to send <a href="/facts/Payload_data/zN2Pgfq6">payload data</a> from a source to a destination. </p>