Subject : data communication and computer networking

Suppose Datagrams are limited to 1000 bytes (including header) between Host A and Router X. The MTU is 500 bytes (including header) between Router X and Router Y and the MTU is 1000 bytes (including header) between Router Y and Destination B. Assume an IP-header of size 20 bytes. In total, how many datagrams reach the destination B if Host A is required to send an MP3 file of 8 million bytes? Explain neatly with the help of a figure the various fragments that are generated, their sizes, and all the key fields of the datagram like fragmentation offset, identifier, and flags (DF, MF). [10] The network connection is as follows: Host A Router X Router Y Host B