| Term | Definition |
|
Physical |
Layer 1 |
|
Data Link |
Layer 2 |
|
Network |
Layer 3 |
|
Transport |
Layer 4 |
|
Session |
Layer 5 |
|
Presentation |
Layer 6 |
|
Application |
Layer 7 |
|
Application |
Proxy Server |
|
Application |
DNS (Domain Name Service) |
|
Application |
FTP (File Transfer Protocol) |
|
Application |
HTTP (Hyper Text Transfer Protocol) |
|
Application |
NFS (Network File System) |
|
Application |
NNTP (Network News Transfer Protocol) |
|
Application |
POP3 (Post Office Protocol v3) |
|
Application |
SMTP (Simple Mail Transfer Protocol) |
|
Application |
SNMP (Simple Network Management Protocol) |
|
Application |
Telnet |
|
Application |
TFTP (Trivial File Transfer Protocol) |
|
Application |
Take data from applications |
|
Application |
Ensure all necessary resources are available |
|
Application |
Initialize services and the network for data transmission |
|
Presentation |
ASCII |
|
Presentation |
GIF |
|
Presentation |
JPEG |
|
Presentation |
TIFF |
|
Presentation |
Reformat or translate between different characters sets |
|
Presentation |
Encrypting/decrypting and compression/ecompression |
|
Presentation |
Provides support for error recovery |
|
Session |
NetBIOS |
|
Session |
RPC - Remote Procedure Calls |
|
Session |
X-Windows |
|
Session |
Assumes a reliable virtual connection |
|
Session |
Establishing, maintaining, synchronization and terminating connections |
|
Session |
Port numbers assigned and maintained |
|
Transport |
ATP (Apple Talk Protocol) |
|
Transport |
NetBeui |
|
Transport & Data Link |
PPTP (Point to Point Tunneling Protocol) |
|
Transport |
SPX (Sequenced Packet Exchange) |
|
Transport |
TCP (Transmission Control Protocol) |
|
Transport |
UDP (User Datagram Protocol) |
|
Transport |
Packages data into segments |
|
Transport |
Provides flow control |
|
Transport |
Performs end-to-end transport of data |
|
Network |
ARP (Address Resolution Protocol) |
|
Network |
ICMP (Internet Control Message Protocol) |
|
Network |
IP (Internet Protocol) |
|
Network |
IPX (Internet Packet Exchange) |
|
Network |
NetBios/NetBeui |
|
Network |
Break segmented data into packets and sequences them |
|
Network |
Assign logical addresses to packets |
|
Network |
Routes packets |
|
Data Link |
Switches |
|
Data Link |
Bridges |
|
Network |
Router |
|
Network |
Brouter |
|
Data Link |
WAP (Wireless Access Points) |
|
Data Link & Physical |
NIC |
|
Data Link |
802.1Q - 802.3 (Ethernet) - 802.11 a/b/g (Wireless) |
|
Data Link |
Token Ring |
|
Data Link |
Break data packet into frames |
|
Data Link |
Manages Hardware Addresses (MAC) |
|
Data Link |
Defines the topology of the network based on IEEE 802.x standards |
|
Data Link |
Provide error and flow control |
|
Physical |
Repeater |
|
Physical |
Hub |
|
Physical |
Cables |
|
Physical |
Physically, mechanaically and/or electronically connect network devices |
|
Physical |
Break frames into raw binary bits |
|
Physical |
Defines the network media used |
| Add or remove terms from this set |