| A | B |
|---|
| Port 21 | FTP Port |
| Port 23 | Telnet Port |
| Port 80 | HTTP Port |
| Port 443 | HTTPS Port |
| DNS | Correlate fully qualified domain names with associated IP addresses |
| Modem connection | Theoretical speed up to 56KBPS |
| BRI ISDN connection | Theoretical speed 64-128KBPS |
| Frame Relay connection | Theoretical speed 56KBPS - 1.544MBPS |
| T1 connection | Theoretical speed 1.544MBPS |
| T3 connection | Theoretical speed 44.736MBPS |
| E1 connection | Theoretical speed 2.048MBPS |
| E2 connection | Theoretical speed 8.448MBPS |
| Ethernet | Theoretical speed 10MBPS - 1GBPS |
| OC-3 | Theoretical speed 155.52MBPS |
| Web caching | Browser checks for requested file in client-side cache before retrieving from Internet |
| Proxy caching | Proxy server-side caching of frequently requested web content |
| File caching | Client-side caching performed to streamline large file downloads |
| Client | System that is requesting resources |
| Host | System that delivers requested resources |
| TCP/IP stack | Group of standards for Internet communication |
| CD | Change Directory - FTP Client Command |
| Get | Retrieve file - FTP Client Command |
| Mget | Retrieve multiple files - FTP Client Command |
| Mput | Send multiple files - FTP Client Command |
| Open | Connect to FTP server - FTP Client Command |
| Put | Send file - FTP Client Command |
| POP3 (Post Office Protocol 3) | Protocol used to receive e-mail |
| Simple Mail Transfer Protocol (SMTP) | Protocol used to send e-mail |
| WINS Servers | Correlate NetBIOS names with associatedIP addresses |
| LMHOST.SAM | File used by WINS to record IP addresses and machine names |
| 1-127 | Range for Class A IP Addresses |
| 128-191 | Range for Class B IP Addresses |
| 192-223 | Range for Class C IP Addresses |
| 224-239 | Range for Class D IP Addresses |
| 240-255 | Range for Class E IP Addresses |
| 255.0.0.0 | Class A default subnet |
| 255.255.0.0 | Class B default subnet |
| 255.255.255.0 | Class C default subnet |
| DHCP server | Dynamic Host Configuration Protocol server; assigns dynamic IPs when client logs in |
| Proxy server | Hide network IP addresses |
| MIME | Multipurpose Internet Mail Extensions; common method of file interpretation |
| uuencoding | MIME type that encodes binary to text and then text to binary |
