| A | B |
|---|
| cell | coverage area of a cellular tower |
| modem | device connected to a computer to transfer data |
| MTSO | responsible for switching from different types of phone service |
| ITU | governs universal telecommunications standards |
| SLC | connections for home telephones that are not more than 96 lines |
| PSTN | another name for home telephone service |
| ARPA | agency involved in the history of the Internet |
| FTP | utility used to transfer files |
| DSL | high-speed phone line |
| Internet2 | improved Web peages, video, and language translation pages |
| analog | telephone lines |
| digital | data inside a computer |
| digital line | carries high-speed digital data |
| bps | bits per second |
| kilobit | 1,000 bits per second |
| Mbps | a million bits per second |
| gigabit | a billion bits per second |
| byte | 8 bits |
| T1 | 1.544 megabits per second |
| T3 | 43.232 megabits per second |
| OC3 | 155 megabits per second |
| OC48 | 2.5 gigabits per second |
| OC192 | 9.6 gigabits per second |
| Telnet | allows remote computer to log into a facility |
| TCP/IP | allows computers to have a unique number to the network |
| open architecture | communication with computer formats without the same internal methods |
| Ethernet | popular network standards for LANs |
| PDA | device used to track appointments, store contacts, and check e-mail |
| Fast Ethernet | provides connections at 100 Mbps |
| Gigabit Ethernet | provides connections at 1,000 Mbps |
| Web server | holds Web pages for the rest of the Internet |
| Wi-Fi | refers to wireless access |
| NSF | agency involved in the development of the Internet |
