This is the structure of IP datagram format(IPv4): Source IP address Destination IP address options 1) Fill the blanks in the structure and explain what the functions of these fields 2) If the number of header length indications of an IP datagram is 1101 , what is the length of its header in bytes? 3) Suppose that there was an 5000 byte IP datagram. Obviously, it needs fragmentation and there is the structure of the datagram.Can you write out all the smaller IP datagram' s structure? \begin{tabular}{|l|l|l|l|l|l|} \hline & Length =5000 & ID =A & Fragflag=0 & Offset=0 & \\ \hline \end{tabular}