| Glossary |
DNS Server | Domain Name Server. The computer you use to access the |
| DNS to allow you to contact other computers on the Internet. |
| The server keeps a database of host computers and their IP |
| addresses. |
Domain Name | The unique name that identifies an Internet site. Domain |
| Names always have 2 or more parts, separated by dots. The |
| part on the left is the most specific, and the part on the right is |
| the most general. A given machine may have more than one |
| Domain Name but a given Domain Name points to only one |
| machine. For example, the domain names: matisse.net, |
| mail.matisse.net, workshop.matisse.net can all refer to the |
| same machine, but each domain name can refer to no more |
| than one machine. Usually, all of the machines on a given |
| Network will have the same thing as the |
| their Domain Names (matisse.net in the examples above). It |
| is also possible for a Domain Name to exist but not be |
| connected to an actual machine. This is often done so that a |
| group or business can have an Internet |
| without having to establish a real Internet site. In these cases, |
| some real Internet machine must handle the mail on behalf of |
| the listed Domain Name. |
Escape Sequence | A sequence of special characters that sends a command to a |
| device or program. Typically, an escape sequence begins with |
| an escape character, but this is not universally true. |
| An escape sequence is commonly used when the computer |
| and the peripheral have only a single channel in which to |
| send information back and forth. If the device in question is |
| "dumb" and can only do one thing with the information being |
| sent to it (for instance, print it) then there is no need for an |
| escape sequence. However most devices have more than one |
| capability, and thus need some way to tell data from |
| commands. |
Ethernet | A LAN |
| coaxial cables and CSMA/CD (Carrier Sense Multiple |
| Access with Collision Detection), a method for sharing |
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