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Header tags have their own place on a page and have to be used in a proper order starting with your h1. The h1 tag should contain your targeted keywords, ones that closely relate to the page title and are relevant to your content. The h2 tag is a subheading and should contain similar keywords to your h1 tag.
IP Header Checksum Calculation. IP checksum is a 16-bit field in IP header used for error detection for IP header. It equals to the oneâs complement of the oneâs complement sum of all 16 bit words in the IP header. The checksum field is initialized to all zeros at computation.