QUESTION 1 A bit stream 01001011 is encoded using the standard CRC method. The g

ID: 672381 • Letter: Q

Question

QUESTION 1

A bit stream 01001011 is encoded using the standard CRC method. The generator polynomial is 1011. What is the bit string that is transmitted ?

01001001 100

01001011 100

01001011 001

01001011 101

01001011 110

QUESTION 2

What are the result and remainder of the division (x^7+x^6+x^4+x^3+1)/(x^2+1) ?

result=x^5+x^4+x^3, remainder=1

result=x^5+x^4+x^3+x^2, remainder=x+1

result=x^5+x^4+x^3, remainder=x+1

result=x^5+x^3+x^+1, remainder=1

result=x^6+x^4+x^3, remainder=1

result=x^5+x^4+x^3+x, remainder=x^2+1

01001001 100

01001011 100

01001011 001

01001011 101

01001011 110

The correct answer is A.

01001001 100

Bit 0,1 and 4 will be occupied by the CRC code and the string should follow. Only happening in case of A.

I think all the options are incorrect here. As per my calculation quotient should be x^5 + x^4 - x^3 + 2x and reminder will be 1-2x

To verify

x^5 + x^4 - x^3 + 2x * (x^2 + 1) + 1-2x

you will get the equation x^7+x^6+x^4+x^3+1

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.