subject - Introduction to Computer Networks

QUESTION 4 Parity checksum can detect error and some cases can also correct the errors. Illustrate in TWO (2) scenarios of how the parity check can be used to detect and may be can correct errors using two dimensional parity matrix with the following bit pattern 01101111 1001. Explain when this technique unable to correct errors. a) One-bit error and correct it (either odd or even parity can be used) [4 Marks] b) Double bit error that can be detected but cannot be corrected. [6 Marks [Total 10 Marks]