Emerson Liebert ICOM-DO Service Manual download pdf (Page 161)

iCOM

Controls Training and Service Manual

Computer and Network Terms

Agent: A

program that performs some information gathering or processing task in

the background. Typically, an agent is given a very small and well-defined task.

Although the theory behind agents has been around for some time, agents have

become more prominent with the recent growth of the

Internet. Many companies

now sell

software that enables you to configure an agent to search the Internet for

certain types of information.

computer science, there is a school of thought that believes that the human

mind essentially consists of thousands or millions of agents all working in parallel.

To produce real

artificial intelligence, this school holds, we should build computer

systems that also contain many agents and systems for arbitrating among the

agents' competing results.

BOOTP: Short for Bootstrap Protocol, an

Internet protocol that enables a diskless

workstation to discover its own IP address, the IP address of a BOOTP server on

the network, and a file to be loaded into memory to

boot the machine. This

enables the workstation to boot without requiring a hard or floppy disk drive. The

protocol is defined by

RFC 951.

Cookie: A message given to a

Web browser by a Web server. The browser

stores the message in a

text file called cookie.txt. The message is then sent back

to the server each time the browser requests a page from the server. The main

purpose of cookies is to identify users and possibly prepare customized

Web

pages for them. When you enter a Web site using cookies, you may be asked to

fill out a form providing such information as your name and interests. This

information is packaged into a cookie and sent to your Web browser who stores it

for later use. The next time you go to the same Web site, your browser will send

the cookie to the Web server. The server can use this information to present you

with custom Web pages. So, for example, instead of seeing just a generic

welcome page you might see a welcome page with your name on it.

DHCP: Short for Dynamic Host Configuration Protocol, a

protocol for assigning

dynamic IP addresses to devices on a network. With dynamic addressing, a

device can have a different IP address every time it connects to the network. In

some systems, the device's IP address can even change while it is still connected.

DHCP also supports a mix of static and dynamic IP addresses.

Dynamic addressing simplifies network administration because the software keeps

track of IP addresses rather than requiring an administrator to manage the task.

This means that a new computer can be added to a network without the hassle of

manually assigning it a unique IP address. Many

ISPs use dynamic IP addressing

for

dial-up users. DHCP client support is built into Windows 95 and NT

workstation. NT 4 server includes both client and server support.

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