Question: In checksum error detection, how does the receiver verify the integrity of the frame? By recalculating the checksum and comparing it with the received checksum

In checksum error detection, how does the receiver verify the integrity of the frame?
By recalculating the checksum and comparing it with the received checksum
By adding the checksum to the frame and checking for overflow
By XORing the checksum with the frame
By comparing the checksum with the sender's address
In checksum error detection, how does the receiver verify the integrity

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