Analyse the header of the IPv4 datagram shown in Figure 6.1 in order to solve the following problems: 3 (i) Prove using the information available there that the IPv4 datagram cannot carry payload obtained from the Transport Layer which is larger than 65,495 bytes. [30%] Figure 6.1 The IPv4 datagram header. (ii) The value of IHL field in a particular IPv4 datagram is 12. How many Option bytes are present in the datagram? [25\%] (iii) Explain how the datagram security is implemented in IPv4 protocol. [20\%] (iv) Explain what is the purpose and the main functions of the Options field in IPv4? [25\%]