Question

In what way does a hash provide a better message integrity check than a checksum (such as the Internet checksum)?

Answer 1

Hash function have less collision than a internet checksum because of computational infeasibility.

Step-by-step explanation:

A collision means there is more then one way to produce the same sum. It is nearly difficult to developed two messages with same hash however, in checksum, it is more easier to develop or modify two messages to have same sum, thereby enabling attackers to have access to the message or the information arising to less message integrity.