On receipt of the frame the recipient recalculates the checksum and compares it to the one received
On receipt of the frame the recipient recalculates the checksum and compares it to the one received
Hopefully, if an error has occurred, the checksums will differ and at least the error will be detected
The problem of computing this checksum will be covered later but first we must ensure that we are capable of delimitinng the boundaries of incoming frames so that we may distinguish the data from the checksum