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3.3-05 Computing the Internet Checksum (1). Compute the Internet checksum value for these two 16-bit words: 11110101 11010011 and 10110011 01000100[Note: you can find more problems like this one hereLinks to an external site..]Group of answer choices01010110 1110100001011110 11000101  01010110 11100111  01101110 11010101

Question

3.3-05 Computing the Internet Checksum (1). Compute the Internet checksum value for these two 16-bit words: 11110101 11010011 and 10110011 01000100[Note: you can find more problems like this one hereLinks to an external site..]Group of answer choices01010110 1110100001011110 11000101  01010110 11100111  01101110 11010101

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Solution

To compute the Internet checksum for the two 16-bit words, follow these steps:

  1. Convert the binary words to hexadecimal for easier calculation.

    • 11110101 11010011 = F5D3
    • 10110011 01000100 = B344

  2. Add the two hexadecimal numbers together.

    • F5D3 + B344 = 1A717

  3. If the sum is larger than 16 bits (as it is in this case), wrap the overflow around by adding it back to the sum.

    • 1A717 - 10000 (which is 16 bits) = A717
    • Then add the overflow (1) back: A717 + 1 = A718

  4. Finally, compute the one's complement of the result. This means flipping all the bits (changing 1s to 0s and 0s to 1s).

    • A718 = 1010 0111 0001 1000
    • One's complement = 0101 1000 1110 0111 = 58E7

So, the Internet checksum value for the two 16-bit words 11110101 11010011 and 10110011 01000100 is 58E7.

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