SUBJECT : DATA COMMUNICATION AND COMPUTER NETWORKING

a) Examine the error-detecting scheme based on cyclic redundancy check (CRC) having the divisor 1001. Suppose the message m4m3m2m1m0=100101 is to be transmitted. Check bits C2C1C0 are appended at the end of the message by the transmitter using the above CRC scheme. The transmitted bit string is denoted by m5m4m3m2m1m0c2c1c0. Determine the value of the check bit sequence C2C1c0. Show all steps. (5 Marks) b) Given the data for transmission as 10110010 , identify the parity bits for the provided data and apply Hamming Code to both detect and correct errors. Provide an explanation of the error detection and correction process, emphasizing the role of the correction bit at position 6 . (5 Marks) [Total: 10 Marks]