Question

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?

Answer 1

-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.

Answer 2

The answer is 1011 in 1's complement.

Step-by-step 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.