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Cheatography
This is a draft cheat sheet. It is a work in progress and is not finished yet.

Zkratky

ARP
Address Resolution Protocol
RARP
Reverse ARP
NAT
Network Address Transl­ation
MAC
Media Access Control
DHCP
Dynamic Host Config­uration Protocol
DNS
Domain Name Server
ICMP
Internet Control Message Protocol
TCP
Transm­ission Control Protocol
UDP
User Datagram Protocol
RPC
Remote Procedure Call
HTTP
Hyper-Text Transfer Protocol
CSMA
Carrie­r-Sense Multiple Access
ATM
Asynch­ronous Transfer Mode
MPLS
MultiP­rotocol Label Switching
OSPF
Open Shortest Path First
RIP
Routing Inform­ation Protocol
BGP
Border Gateway Protocol
SNMP
Simple Network Monitoring Protocol
RMON
Remote Network Monitoring
MTU
Maximum Transm­ission Unit

Ethernet

10Base5
koax, max. 500m
10Base2
koax, max. 185m
10Base-T
twisted pair, UDP/STP
100Base-TX
TP, 100Mb/s
100Base-FX
optika, 100Mb/s
1000Ba­se-TX
TP, 1Gb/s
1000Ba­se-SX
optika, 1Gb/s
10GBase-SR
optika, 10Gb/s
40Gb/s
neni vyuzivano
100Gb/s
malo instanci, napr. Praha -> Brno
Terabit Ethernet
oznaceni pro 100Gb/s+
 
specif­ikace az do 400Gb/s
 

OSI

Fyzicka
Linkova
Sitova
Transp­ortni
Relacni
Prezen­tacni
Aplikacni

CSMA

 
nez stanice zacne vysilat, nasloucha zda-li nekdo jiny nevysila
 
pokud ne, zacne
 
pokud ano
 
- pocka a pak hned zacne
 
- pocka a pak s nahodnym zpozdenim zacne
CSMA/CD
 
pri vysilani i nasloucha
 
pokud zjisti kolizi, prerusi vysilani
 
Ethernet
CSMA/CA
 
request to send / clear to send
 
centralni stanice udeluje povoleni k vysilani
 
WiFi
 

Fyzicka

umoznuje prenos bitu kanalem
hub, repeater

Linkova

detekc­e/k­orekce chyb
ramce
rizeni pristupu k lince
MAC
switch

Sitova

adresace a smerovani
IP
router

Transp­ortni

rozklad dat na pakety
adresa, port
TCP/UDP

Relacni

logicke rozhrani pro aplikace
synchr­onizace
RPC

Prezen­tacni

komper­se/­dek­omprese
kodovani
sifrovani

Aplikacni

interface pro uzivatele
HTTP