00:01
Hello students, the internet checksum is a simple error checking technique used in network protocols to detect the errors in the transmitted data.
00:12
So it involves the summing up all the 16 bits words in the data and then taking the ones complement of the sum to create the checksum value.
00:22
So in our case, we have the 3 bytes binary message that is as 00110001 and again 00110010 this is the second bit and third bit is 00110011.
00:42
So let's break down the steps to calculate the 16 bits of internet checksum.
00:49
So first we need to divide the message into 16 bits that is of 2 bytes of chunk.
01:12
Where the chunk 1 will be as 00110001 and another will be as 00110010 and the chunk 2 will be as 00110011 and the other will be as 0000000.
01:42
Now later you need to sum up the 16 bit of chunk.
01:47
Sum up the 16 bit of chunks where it sum the chunk.
01:59
It sums the chunk 1.
02:02
So chunk 1 that will be as 0011000100110010 that is nothing but an hexa of 0 into 32 32 and sum of chunk 2 will be as 00110011 and it will be 0000000 and therefore here it will be an hexa of 0 of 3300.
02:45
So then later you need to add the 2 16 bit sum together.
02:56
2 16 bits sum together...