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Computer Networks
Icmp
Q
In a simple echo-request message, the value of the sum is 01010000 01011100. Then, value of checksum is ___________
AA. 10101111 10100011
BB. 01010000 01011100
CC. 10101111 01011100
DD. 01010000 10100011
Correct Answer:
A. A. 10101111 10100011
Explanation:
The sender side adds the bits of the fragmented packet to find a sum. Checksum is the compliment of the sum (exchange 0’s and 1’s). The receiver then has to verify the checksum by adding the bits of the received packet to ensure that the packet is error-free.
