Transport |
|
| TCP (Transmission Control Protocol) |
Connection-based services (Day 4) |
| UDP (User Datagram Protocol) |
Connectionless services (Day 4) |
Routing |
|
| IP (Internet Protocol) |
Handles transmission of information (Day 3) |
| ICMP (Internet Control Message Protocol) |
Handles status messages for IP (Day 3) |
| RIP (Routing Information Protocol) |
Determines routing (Day 5) |
| OSPF (Open Shortest Path First) |
Alternate protocol for determining routing
(Day 5) |
Network Addresses |
|
| ARP (Address Resolution Protocol) |
Determines addresses (Day 2) |
| DNS (Domain Name System) |
Determines addresses from machine names (Day 2
and Day 11) |
| RARP (Reverse Address Resolution Protocol) |
Determines addresses (Day 2) |
User Services |
|
| BOOTP (Boot Protocol) |
Starts up a network machine (Day 11) |
| FTP (File Transfer Protocol) |
Transfers files (Day 6) |
| Telnet |
Enables remote logins (Day 6) |
| TFTP (Trivial File Transfer Protocol) |
Enables remote file transfers (Day 6) |
Gateway Protocols |
|
| EGP (Exterior Gateway Protocol) |
Transfers routing information for external
networks (Day 3 and Day 5) |
| GGP (Gateway-to-Gateway Protocol) |
Transfers routing information between gateways
(Day 3 and Day 5) |
| IGP (Interior Gateway Protocol) |
Transfers routing information for internal
networks (Day 5) |
Others |
|
| NFS (Network File System) |
Enables directories on one machine to be
mounted on another (Day 12) |
| NIS (Network Information Service) |
Maintains user accounts across networks (Day
12) |
| NTP (Network Time Protocol) |
Synchronizes clocks (Day 11) |
| PING (Packet Internet Groper) |
Checks connectivity (Day 7) |
| RPC (Remote Procedure Call) |
Enables remote applications to communicate
(Day 12) |
| SNMP (Simple Network Management Protocol) |
Sends status messages about the network (Day 13) |
