Consider a data link layer using a 7 -bit Hamming code for error detection and correction. A transmitted codeword is 1101010. After receiving the codeword, the receiver detects that there is an error.
a) What is the purpose of using a Hamming code in the link layer?
b) Identify the position of the error in the received codeword using the Hamming code mechanism.
c) Correct the error and provide the correct codeword.