| A | B |
|---|
| protocol | set of rules and conventions for sending information over a network |
| Bindings | Links that enable communication among network protocols |
| Application | 7-communicates with user ex. Web Browser |
| Presentation | 6-converts information presented by user, ASCII to EBCDIC, compression and encryption |
| Session | 5-provides a connection between two computers |
| Transport | 4-to prepare information for transport-divides it into packets- 4kb in size and air checks packets- puts them in order |
| Network | 3-router-directs packets to the destination |
| Data Link | 2-connects network layer to the physical media-device drivers |
| Phyical | 1-Network card, ethernet cable, etc. |
| DARPA | model of network components that has 4 levels |
| OSI | model of networking that has 7 levels |
| Static IP | address assigned to a particular machine |
| Dynamic IP | address assigned when computer accesses server |
| DHCP | Assigns IP addresses automatically |
| APIPA | ) Allows workgroup computers to communicate with each other via TCP/IP but does not allow access to the Internet |
| Ad hoc | peer to peer –devices communicate directly with each other |
| Infrastructure | network access point used for communication |
| SSID | name used to identify the wireless connection |
| WEP | uses a fixed encryption key |
| WPA2 | newer encryption method that uses changeable keys |
| Ping | used to verify a connection with another computer |
| ARP | shows which systems on the local network have communicated with your system |
| Ipconfig | Shows your IP address, subnet mask, DNS server |
| Nbstat | displays stats and connections for the NetBios -troubleshoot file and print connections |
| Netstat | shows current TCP/IP sessions and gives statistics about each |
| Route | Displays or modifies the local routing table |
| Hostname | name of the local computer |
| Tracert | route of the computer to a remote system across the Internet |
| Pathping | Records packet loss. Helps in investigating connectivity problems |
