Parity Checking Single Bit Parity: Two Dimensional Bit Parity: Detect single bit errors Detect and correct single bit errors row parity parity d data bits d1,1 dij nbit d1,j+1 d21 d2i d2,j+1 01110001101010110 column d,1 dij di,j+1 parity di+1,1 di+1}di+1,j+1 101011 1Φ101h 111100 101100parity error 011101 011101 001010 001010 no errors parity error correctable single bit error 5:DataLink Layer 5-115: DataLink Layer 5-11 Parity Checking Single Bit Parity: Detect single bit errors Two Dimensional Bit Parity: Detect and correct single bit errors 0 0