Écrit par CCNA
|
28-05-2008 |
N° |
Layers |
Used to |
Keywords |
Protocols |
Devices |
1.
|
Physical |
transmit frames
|
medium, technique, mode |
|
hub, cable
|
2. |
Datalink |
synchronize, detect errors, identify packets
|
MAC, FCS, LLC, frame
|
PPP, frame-relay
|
switch |
3. |
Network |
deliver packets
|
PING, packet
|
IP, ICMP, ARP, RARP |
router |
4. |
Transport |
transport data
|
multiplexing, 3 way handshake, segment, connection oriented/less, windowing
|
TCP, UDP |
|
5. |
Session |
control the connection
|
|
|
|
6. |
Presentation |
present data
|
encryption/decryption, compression/decompression, format
|
|
|
7. |
Application |
perform applications
|
|
http 80, smtp 25, pop3 110, ftp 21, telnet 23
|
|
|
Dernière mise à jour : ( 31-05-2008 )
|