An IPv6 datagram consists of the following (in the stated order): Base Header, The Fragmentation Header, Authentication Payload Extension Header, TCP Segment. 

a) Draw the datagram and show what the contents of each of the Next Header fields would contain. You don't have to look up the actual numeric value, just explain what it would be referencing next. 

b) If each extension header is 33 bytes long and the value of the payload length field is  882 bytes , what is the size of the IPv6 datagram? What percentage of the datagram size is overhead?