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Écrit par CCNA
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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
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encryption/decryption, compression/decompression, format
|
|
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| 7. |
Application |
perform applications
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|
http 80, smtp 25, pop3 110, ftp 21, telnet 23
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Dernière mise à jour : ( 31-05-2008 )
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Cisco CCNA (English)