\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Hubert (monsieur\_h)}
\pdfinfo{
  /Title (network-lesson.pdf)
  /Creator (Cheatography)
  /Author (Hubert (monsieur\_h))
  /Subject (Network lesson Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{6969FF}
\definecolor{LightBackground}{HTML}{F5F5FF}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Network lesson Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Hubert (monsieur\_h)} via \textcolor{DarkBackground}{\uline{cheatography.com/234/cs/127/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Hubert (monsieur\_h) \\
  \uline{cheatography.com/monsieur-h} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 5th December, 2011.\\
   Updated 12th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Net/Host ID by Class}}  \tn
% Row 0
\SetRowColor{LightBackground}
A & \seqsplit{0nnnnnnn.HHHHHHHH.HHHHHHHH.HHHHHHHH} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
B & \seqsplit{10nnnnnn.nnnnnnnn.HHHHHHHH.HHHHHHHH} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
C & \seqsplit{110nnnnn.nnnnnnnn.nnnnnnnn.HHHHHHHH} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
D & \seqsplit{1110XXXX.XXXXXXXX.XXXXXXXX.XXXXXXXX} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
E & \seqsplit{1111XXXX.XXXXXXXX.XXXXXXXX.XXXXXXXX} \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.86963 cm} x{2.19696 cm} x{1.51041 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Subnetting}}  \tn
% Row 0
\SetRowColor{LightBackground}
 & {\bf{Binary form}} & {\bf{Dot-decimal notation}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
IP \seqsplit{address} & \seqsplit{11000000.10101000.00000101.10000010} & \seqsplit{192.168.5.130} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Subnet mask & \seqsplit{11111111.11111111.11111111.11000000} & \seqsplit{255.255.255.192} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{Network} prefix & \seqsplit{11000000.10101000.00000101.10000000} & \seqsplit{192.168.5.128} \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Host part & \seqsplit{00000000.00000000.00000000.00000010} & 0.0.0.2 \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Network Topology}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/monsieur-h_1323078104_NetworkTopologies.png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Examples of differents networks topologies.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Three way handshake}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/monsieur-h_1323076735_3way-handshake.png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Illustrates the three way handshake used for TCP connections.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{IP Frame}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/monsieur-h_1323077364_ethernet_frame.png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.51041 cm} x{1.96811 cm} x{1.09848 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{TCP/IP - Class ranges}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Class}} & {\bf{Range}} & {\bf{Private}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Class A & \seqsplit{0.0.0.0-127.255.255.255} & \seqsplit{10.0.0.0/8} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Class B & \seqsplit{128.0.0.0-191.255.255.255} & \seqsplit{172.16.0.0/12} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
Class C & \seqsplit{192.0.0.0-223.255.255.255} & \seqsplit{192.168.0.0/16} \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Class D (multicast) & \seqsplit{224.0.0.0-239.255.255.255} & nope \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
Class E (reserved) & \seqsplit{240.0.0.0-255.255.255.255} & nope \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{IEEE 802}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{802.3 - Ethernet} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{802.11a/b/g/n - Wifi} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{802.8 - Fiber Optic} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{802.15.1 - Bluetooth} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{802.16 - WiMAX} \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.32733 cm} x{2.70043 cm} p{0.54924 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{OSI - Protocol - Device}}  \tn
% Row 0
\SetRowColor{LightBackground}
7 \seqsplit{Application} & FTP,HTTP,DNS,SSH,DHCP... &  \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
6 \seqsplit{Presentation} & SMB,ASCII,AFP & \seqsplit{Router} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
5 Session & TCP,UDP & \seqsplit{Switch} \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
4 Transport & ARP,IP,ICMP & Hub \tn 
% Row Count 7 (+ 1)
% Row 4
\SetRowColor{LightBackground}
3 Network & HDLC,PPP &  \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
2 Link & ARP,Ethernet,Token Ring, irDA &  \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
1 Physical & ADSL, LDSL, USB &  \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.44333 cm} x{3.53367 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{DHCP}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Client}} & {\bf{Server}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{DHCP Discover -{}-\textgreater{}} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
 & \textless{}-{}- DHCP Offer \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{DHCP Request -{}-\textgreater{}} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & \textless{}-{}- DHCP Acknowledgement \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}