Investigate the functions of the layers of the TCP/IP networking model Find out the number of layers and their functions of the Open System Interconnection (OSI) model Find out what the TCPDUMP program does and what is this program used for. Also, find out the commands for making TCPDUMP to a) Set a network interface into promiscuous mode (to sniff) b) Save the capture traffic in a file c)Show the capture traffic on the computer screen without saving it and report your findings. Report the function of the Internet Engineering Task Force (IETF) Report what the IETF Request For Comments (RFC) 2131 is about and provide a copy of the first page. Hand in your prelab to your instructor before proceeding to perform the remaining exercises in this chapter