User manual

Appendix G: Glossary
264 Cobalt Qube 3 User Manual
ISDN
See Integrated Services Digital Network (ISDN).
LAN
See local area network (LAN).
Leased IP address
An IP address assigned by the Dynamic Host Configuration Protocol
(DHCP) to an unrecognized computing device. This method involves setting
up a leased pool of IP addresses that are allocated dynamically when new
devices are booted and recognized on the network.
Local area network (LAN)
A high-speed, low-error data network covering a relatively small geographic
area (up to a few thousand meters). A LAN connects workstations,
peripherals, terminals and other devices in a single building or other
geographically limited area. LAN standards specify cabling and signaling at
the physical and data link layers of the Open Systems Interconnection (OSI)
model. Widely used LAN technologies include Ethernet, fiber distributed
data interface (FDDI) and token ring.
See also wide area network (WAN).
Logical memory
See virtual memory.
Media access control (MAC) sublayer
The lower of the two sublayers of the data link layer defined by the IEEE.
The MAC sublayer handles access to shared media, such as whether token
passing or contention is used.
Media access control (MAC) address
A standardized data-link-layer address that is required for every port or
device that connects to a LAN. Other devices in the network use these
addresses to locate specific ports in the network, and to create and update
routing tables and data structures. MAC addresses are six bytes long and are
controlled by the IEEE. Also known as a hardware address, a MAC-layer
address and a physical address.
When your computer is connected to the Internet, a correspondence table
relates your IP address to your computer's physical (MAC) address on the
network