Date: Wednesday, 12 Feb 2003 15:40:57
   From: Mark Jacobson <jacobson@cns.uni.edu>
     To: 810-023-01@uni.edu
Subject: Monday handout on web...  QUIZ NUMBER ONE guide too...

Hi 023 students,

    The Monday assignment handout given out in class last Monday is
due next Monday, February 17th.  I have converted the handout to a
web page at URL:
                 http://www.cns.uni.edu/~jacobson/023/cmdPrompt023.htm

                 in case you missed class and did not get the handout
                 or misplaced your assignment handout.

    We have a quiz on Wednesday, February 19th.

    The quiz will cover chapters 1, 2, 6 and 11.  You answered
    the review questions for chapters 1 and 2 and turned them in.
    Those homeworks have been handed back.

    What is important from chapter 6 and chapter 11?  What readings
    reinforce the lectures and labs experience and notes and class
    handouts.

    Chapter six:  Networking Hardware

          Repeaters                 Bridges      Routers
          Gateways                  Brouters

          Network Adapters (*** NIC or NAC or MAC ***)
                  Network Interface Card = NIC
                  Network Adapter Card = NAC

                  MAC - Media Access Control involves your Adapter card,
                            which is the INTERFACE between two entities:

                        The network medium (wire or cable or glass or air)
                              and
                        the computer

                  The MAC address of your computer in Wright Hall is
                      revealed with
                                       ipconfig /all

                  Here is the MAC address of one of the Wright Hall
                  computers:

                  Physical Address. . . . . . : 00-C0-4F-5F-87-D5

                  Each pair of digits represents one byte.
                  Each digit (A, B, C, D, E and F are base 16 digits)
                       represents one-half of a byte, also known as
                       one nybble.  One nybble = 4 bits.
                                    One byte   = 8 bits = 2 nybbles.

Ethernet adapter El90x1:    NIC or NAC or MAC address

        Description . . . . . . . . : 3Com 3C90x Ethernet Adapter
        Physical Address. . . . . . : 00-C0-4F-5F-87-D5
        DHCP Enabled. . . . . . . . : Yes
        IP Address. . . . . . . . . : 134.161.243.2
        Subnet Mask . . . . . . . . : 255.255.128.0
        Default Gateway . . . . . . : 134.161.128.1
        DHCP Server . . . . . . . . : 134.161.1.40
        Primary WINS Server . . . . : 134.161.224.11

      Chapter 1 - An Introduction to Networking

      Chapter 2 - Networking Standards and the OSI Model

                  * From the bottom layer to the top layer - 7 layers

                               Please Do Not Throw Sausage Pizza Away
                               P      D  N   T     S       P     A

                  * From the top layer to the bottom layer - 7 layers

                                    All People Seem To Need Data Processing
                                    A   P      S    T  N    D    P

      Chapter 11 - Networking with TCP/IP and the Internet
                   IP Addressing
                   Network Classes - Class A, B and C IP addresses
                   Subnetting and subnet masks
                   Tracert or Traceroute (page 564)
                   Ipconfig (page 565)
                   PING (page 559)

      Know the E F E R A acronym, EFERA.  It is on the class web page
      and on at least two different days of your class lecture notes.

      Know the four essential components for any network of computers
      to exist.

      Know the terms talked about in class and on the web page.

      Know parity, Hamming codewords, subnet mask concepts, IP address
      formats (network bits and host bits or portion of address).

      Understand why uni.edu means 134.161.0.0 to a router out on the
      internet.  Know why y and x are not relevant at all out on the
      internet, where a packet is being routed across Kansas headed
      to uni.edu, for example,
                               with w.x.y.z where w = 134
                                              and x = 161
                                              and y = IRRELEVANT
                                              and z = IRRELEVANT
      Use the handouts and last years
      quiz and the group exercises from in-class to
      prepare for quiz one.

      Know input and output redirection concepts and pipes.

      dir A: > myDisketteContentsAsOfFeb12th.txt
      assoc | more
      assoc | find /C "="

      Know why there are only a total of 9 different numbers that
      are legal for a subnet mask octet value.

      If w.x.y.z is a subnet mask, w has to be 255, ALWAYS.

      If w.x.y.z is a class A network subnet mask, there are
         only 9 possible answers as to what the x octet value could be:

      0, 128, 192, 224, 240, 248, 252, 254 and 255

      See the web page for more details and the base 2 binary form of
      each of these nine.
                           http://www.cns.uni.edu/~jacobson/c023.html

      This is enough of a study guide/outline for the first quiz.

      Mark