Give short answers to the following questions. Answer Q1-Q4 by using the following information. A data frame contains a text of 8 characters "ethernet" encoded using ASCII characters. NOTE: the required ASCII values are: e = 1100101 t = 1110100 h = 1101000 r = 1110010 n = 1101110 Assuming this, determine:
Q1. Codewords for the text "ethernet" using even parity.
Q2. Two-dimensional parity check bits for the text "ethernet" using even parity.
Q3. Codeword at the sender site for the dataword "h" using the divisor x^4 + x^2 + x + 1.
Q4. Checksum at the sender site for the text "ethernet". Hint: Use hexadecimal equivalents of the characters. e = 0x65 t = 0x74 h = 0x68 r = 0x72 n = 0x6E
Q5. Show the checking of codeword 10010001101 at the receiver site by using the divisor x^4 + x^2 + x + 1. Is there an error?
Q6. Find the checksum at the receiver site if the four data items are received as 0x6674, 0x7865, 0x726F, 0x5584, 0x5A43. Is there an error?
Q7. Find the codeword at the sender site for dataword 1110 using Hamming code C(7,4).
Q8. The codeword 1100010 is received. Using the Hamming code C(7,4), find if there is an error in the codeword. If there is, what is the correct codeword and dataword sent?