70
43-TV-25-11 GLO Issue 11 03/02 UK
DHCP
- Dynamic Host Configuration Protocol.
Used for assigning dynamic IP address to
devices on a network. With dynamic IP addresses, a device can have a different IP address every
time it connects to the network.
DNS
-
Domain Name System (or Service)
, an Internet service that translates Domain names into
IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet
however, is really based on IP Address. Every time you use a domain name, therefore, a DNS ser-
vice must translate the name into the corresponding IP address. For example, the domain name
www.honeywell.com/sensing
might translate to 195.26.34.186. The DNS system is, in fact, its own
network. If one DNS server doesn't know how to translate a particular domain name, it asks another
one, and so on, until the correct IP address is returned.
E-mail
- Correspondence or data transmitted over computer telephone lines to a recipient via
network lines or a service provider.
Ethernet
- The worlds most popular network standard. A local area networking protocol for con-
nection and interaction or communication between computers.
Ethertalk
- What you call Ethernet when you use it on a Macintosh.
Fast Ethernet
- An Ethernet standard which operates at 100Mbps rather than 10Mbps.
File server
- A network computer containing disk drives that are available to network users. A
computer library that stores a library of program and data files for a number of network users.
File Transfer Protocol (FTP)
- A method of retrieving information from the internet. FTP are the
rules that govern the transfer of data files within a computer or between computers.
FIXED
- Fixed IP Resolution specified by user. Enter known IP address and Subnet Mask.
Handshaking
- The protocol for identification and communication between two pieces of equip-
ment.
Host
- The home or controlling computer in a network of computers or printers.
Hub
- A common connection point for devices in a network. Hubs are commonly used to connect
segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied
to the other ports so that all segments of the LAN can see all packets. See passive hub, intelli-
gent hub and switching hub
Intelligent hub
- Intelligent hubs include additional features that enables an administrator to
monitor the traffic passing through the hub and to configure each port in the hub. Intelligent hubs
are also called manageable hubs.
IP Address
- This is an identification for communication. An IP Address is a 32-bit number that
identifies each sender or receiver of information that is sent in packets across the Internet.
IP Resolution
- A mechanism which maps the IP Address to an Ethernet address. This is also
known as an Address Resolution Protocol, or ARP.
Local Area Network (LAN)
- A local area network (LAN) is a group of computers and associ-
ated devices that share a common communications line and typically share the resources of a
single processor or server within a small geographic area (for example, within an office building).
Usually, the server has applications and data storage that are shared in common by multiple
computer users. A local area network may serve as few as two or three users (for example, in a
home network) or many as thousands of users