Learning Objectives
            Upon completion of this lesson, students will:
            •be able to identify the OSI Network layers 
               and their functions.
            •research and recognize common network 
               attacks.
            •explain one of the network attacks and 
               analyze the ethical considerations and 
               consequences dealt to attackers.
                          This document is licensed with a Creative Commons Attribution 4.0 International License   ©2017  
                         www.C5colleges.org This material is based upon work supported by the National Science Foundation under 
                         Grant No.1548315.
                        IP Moving Truck and The Internet
              What does the moving truck have in common with the internet?
       MOVING ACROSS THE COUNTRY (IP TRUCK)                                 THE INTERNET
       The IP Moving Truck traveled on a road that was built for            TOPOLOGY: Data on the internet travels on DSL, Ethernet, 
       it.  The road was made to send trucks like IP Truck across           or Cable System – all “roads” intended to carry payload.
       the country.
       IP Moving Truck = collection of boxes                                Ethernet Frame = collection of packets 
       Box = collection of items                                            TCP/IP or UDP Packet = collection of data
       You wanted what is inside the box.  If there was more                Applications use what is in the packet.  If there is more 
       than one box needed for a room, you assembled these                  than one packet needed, these are assembled by the 
       when the boxes were received.                                        application when received.
                          This document is licensed with a Creative Commons Attribution 4.0 International License   ©2017  
                         www.C5colleges.org This material is based upon work supported by the National Science Foundation under 
                         Grant No.1548315.
                    Some More Information about 
                    the Truck
                                                                                    BEDROOM                  BATHROOM
                Ethernet         IP Traffic                          PayloIPa dPayload                                   Ethernet 
                                                       TCP                           HTTP Data
                Header                                                                                                   Trailer
                          This document is licensed with a Creative Commons Attribution 4.0 International License   ©2017  
                         www.C5colleges.org This material is based upon work supported by the National Science Foundation under 
                         Grant No.1548315.
            Seeing Interrelationships in 
            “Truck”
                                                                                         IP (Internet                    ETHERNET
                                                    TCP or UDP                           Protocol)
                          This document is licensed with a Creative Commons Attribution 4.0 International License   ©2017  
                         www.C5colleges.org This material is based upon work supported by the National Science Foundation under 
                         Grant No.1548315.
              Two ways to Transport Items
           Envelops                                                ol                  Boxes in IP Moving Van
                                                                  o
                                                               ch
                                                              S
                                                          am
                                                         e
                                                       Dr
                                                     r
                                                   ou             e
                                                 Y              n
                                                              La
           • Unreliable                                   am                           •
                                                         e
                                                       Dr                                 reliable
                                                     5             T
                                                                  S
                                                                , 
                                                              ity
                                                             C
                                                         am 
                                                        e
                                                     Dr
           • No return                                                                 •  delivery guaranteed and if 
               receipt                                                                    something is lost, user can re-
                                                                                          request
                                                                                       TRANSMISSION CONTROL 
           USER DATAGRAM PROTOCOL (UDP)                                                PROTOCOL (TCP)
           • no return receipt                                                         • reliable
           •  no formal close/open,                                                    •  delivery guaranteed and if 
              “connectionless”                                                            something is lost, user can re-
           •  no reorder, no flow control, unreliable                                     request
                            This document is licensed with a Creative Commons Attribution 4.0 International License   ©2017  
                           www.C5colleges.org This material is based upon work supported by the National Science Foundation under 
                           Grant No.1548315.