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a) Calculate the checksum of following 2 bytes: 00110101 and 10101100, and fill in the blank:

b) Calculate the checksum of following 2 bytes: 01011010 and 10110100, and fill in the blank:

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The Checksum is used to examine and detect errors in transmitted data over a computer network. The Checksum values are :

  • 00101110
  • 00001111

To calculate the checksum :

  • Add the two bytes together :

0_0_1_1_0_1_0_1

1_ 0_1_0_1_1_0_0

_______________

1_ 1_0_1_0_0_0_1

  • Take the complement of the sum

Checksum = 00101110

B.)

  • Add the two bytes together

0_1_0_1_1_0_1_0

1_ 0_1_1_0_1_0_0

_______________

0_ 0_0_0_1_1_ 1_0

______________1

0_ 0_0_0_1_1_1_1

  • Take the complement of the sum

Checksum = 00001111

Therefore, the checksum values are :

  • 00101110
  • 00001111

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