Suppose that a message 1001 1100 1010 0011 is transmitted using internet checksum (4-bit word). what is the value of the checksum? 2.8. what is the remainder obtained by dividing x 7 + x 5 + 1 by the generator polynomial x 3 + 1?

The answer is 1011 in 1's complement.

Explanation:

Checksum is the process of summing the characters during the transmission. Adding the sum of the characters in the message end and transmit that character message. If both sums are equal, then there is no error during transmission of data. If both the sums are not equal, then there is error during the transmission data.

0010

10

0100 =

Take one's complement 1100.

1's complement 0100 is 1011.

-x^2+x+1 will be the remainder generated when we divide x^7+x^5+1 by x^3+1, we will use simple division method or the prime factorization.