COMPUTER COMMUNICATIONS AND NETWORKS QUESTION

a) IP plays key functionalities in the network layer. Analyze the following questions related to IPv4 and calculate the right answers. i. An IP fragment has arrived with an offset value of 100. Determine how many bytes of data were originally sent by the source before the data in this fragment? ii. An IPv4 datagram has arrived in which the offset value is 300 and the payload size is 100 bytes. Find the number of the first byte and the last byte? iii. Which fields of the IPv4 datagram main header may change from router to router and why