| A | B |
|---|
| Internet | network of networks |
| e-mail | send and receive electronic letters |
| Telnet | access publicly accessible computers and run programs on them |
| Gopher | menu-driven Internet tool used to access files and documents around the world |
| hacking | breaking into remote computers you are not authorized to access |
| World Wide Web | interlinked graphics, text, audio, and video |
| FTP | allows you to copy files, documents, games, books, and computer programs from one computer to your own |
| ARPANET | connected military and scientific computers together |
| NSF | placed supercomputers a major universities |
| NSFNET | connected supercomputers at major universities together and connected an additional 100 other universities |
| network | two or more computers connected together |
| IP packet | an e-mail message your computer divides into smaller sized chunks of data and sends over the net |
| header | tacked on to the front of an IP packet--contains the source address, destination address and a checksum |
| source address | address of computer sending the data |
| destination address | address of computer where the data is going |
| checksum | a number verifying nothing got lost along the way |
| router | sends the e-mail message towards the destination |
