A transmitting node will implement two-dimensional even-parity for an outgoing group of four characters, each represented as a 7-bit ASCII digit....

A transmitting node will implement two-dimensional even-parity for an outgoing group of four characters, each represented as a 7-bit ASCII digit. They are 0111011, 0100010, 1100011 and 1001011.

a) show below all the bits that are sent, including parity-bits

b) how many bit errors could be detected?

c) how many bit errors could be corrected?