\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{kenny11cz}
\pdfinfo{
  /Title (psi.pdf)
  /Creator (Cheatography)
  /Author (kenny11cz)
  /Subject (PSI 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}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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{PSI Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{kenny11cz} via \textcolor{DarkBackground}{\uline{cheatography.com/53968/cs/15866/}}}
\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}kenny11cz \\
  \uline{cheatography.com/kenny11cz} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 22nd May, 2018.\\
   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}{Zkratky}}  \tn
% Row 0
\SetRowColor{LightBackground}
ARP & Address Resolution Protocol \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
RARP & Reverse ARP \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
NAT & Network Address Translation \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
MAC & Media Access Control \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
DHCP & Dynamic Host Configuration Protocol \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
DNS & Domain Name Server \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
ICMP & Internet Control Message Protocol \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
TCP & Transmission Control Protocol \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
UDP & User Datagram Protocol \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
RPC & Remote Procedure Call \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
HTTP & Hyper-Text Transfer Protocol \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
CSMA & Carrier-Sense Multiple Access \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
ATM & Asynchronous Transfer Mode \tn 
% Row Count 13 (+ 1)
% Row 13
\SetRowColor{white}
MPLS & MultiProtocol Label  Switching \tn 
% Row Count 14 (+ 1)
% Row 14
\SetRowColor{LightBackground}
OSPF & Open Shortest Path First \tn 
% Row Count 15 (+ 1)
% Row 15
\SetRowColor{white}
RIP & Routing Information Protocol \tn 
% Row Count 16 (+ 1)
% Row 16
\SetRowColor{LightBackground}
BGP & Border Gateway Protocol \tn 
% Row Count 17 (+ 1)
% Row 17
\SetRowColor{white}
SNMP & Simple Network Monitoring Protocol \tn 
% Row Count 18 (+ 1)
% Row 18
\SetRowColor{LightBackground}
RMON & Remote Network Monitoring \tn 
% Row Count 19 (+ 1)
% Row 19
\SetRowColor{white}
MTU & Maximum Transmission Unit \tn 
% Row Count 20 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.59264 cm} x{3.38436 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Ethernet}}  \tn
% Row 0
\SetRowColor{LightBackground}
10Base5 & koax, max. 500m \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
10Base2 & koax, max. 185m \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
10Base-T & twisted pair, UDP/STP \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
100Base-TX & TP, 100Mb/s \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
100Base-FX & optika, 100Mb/s \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
1000Base-TX & TP, 1Gb/s \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
1000Base-SX & optika, 1Gb/s \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
10GBase-SR & optika, 10Gb/s \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
40Gb/s & neni vyuzivano \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
100Gb/s & malo instanci, napr. Praha -\textgreater{} Brno \tn 
% Row Count 11 (+ 2)
% Row 10
\SetRowColor{LightBackground}
Terabit Ethernet & oznaceni pro 100Gb/s+ \tn 
% Row Count 13 (+ 2)
% Row 11
\SetRowColor{white}
 & specifikace az do 400Gb/s \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{OSI}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Fyzicka} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Linkova} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Sitova} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Transportni} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Relacni} \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Prezentacni} \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Aplikacni} \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{CSMA}}  \tn
% Row 0
\SetRowColor{LightBackground}
 & nez stanice zacne vysilat, nasloucha zda-li nekdo jiny nevysila \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
 & pokud ne, zacne \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
 & pokud ano \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
 & - pocka a pak hned zacne \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & - pocka a pak s nahodnym zpozdenim zacne \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{CSMA/CD} \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
 & pri vysilani i nasloucha \tn 
% Row Count 9 (+ 1)
% Row 7
\SetRowColor{white}
 & pokud zjisti kolizi, prerusi vysilani \tn 
% Row Count 11 (+ 2)
% Row 8
\SetRowColor{LightBackground}
 & Ethernet \tn 
% Row Count 12 (+ 1)
% Row 9
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{CSMA/CA} \tn 
% Row Count 13 (+ 1)
% Row 10
\SetRowColor{LightBackground}
 & request to send / clear to send \tn 
% Row Count 14 (+ 1)
% Row 11
\SetRowColor{white}
 & centralni stanice udeluje povoleni k vysilani \tn 
% Row Count 16 (+ 2)
% Row 12
\SetRowColor{LightBackground}
 & WiFi \tn 
% Row Count 17 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Fyzicka}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{umoznuje prenos bitu kanalem} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{hub, repeater} \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Linkova}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{detekce/korekce chyb} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{ramce} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{rizeni pristupu k lince} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{MAC} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{switch} \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Sitova}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{adresace a smerovani} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{IP} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{router} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Transportni}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{rozklad dat na pakety} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{adresa, port} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{TCP/UDP} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Relacni}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{logicke rozhrani pro aplikace} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{synchronizace} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{RPC} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Prezentacni}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{komperse/dekomprese} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{kodovani} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{sifrovani} \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Aplikacni}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{interface pro uzivatele} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{HTTP} \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}