User manual

Appendix F: Glossary
92 Cobalt CacheRaQ 4 User Manual
Internet Protocol (IP)
A network-layer protocol in the TCP/IP stack offering a connectionless
internetwork service. IP provides features for addressing,
type-of-service specification, fragmentation and reassembly, and security.
IP is defined in RFC 791.
InterNIC
The former organization responsible for registering and maintaining the
com, edu, gov, net and org domain names on the World Wide Web. Domain
name registration is now performed by Network Solutions, Inc. who will
continue to be under U.S. government contract for a limited time.
IP address
A 32-bit address assigned to hosts using Transmission Control Protocol/
Internet Protocol (TCP/IP). An IP address belongs to one of five classes
(A, B, C, D or E) and is written as four octets separated by periods (for
example, 192.168.10.10), also called the dotted decimal format. Each
address consists of a network number, an optional subnetwork number and a
host number. The network and subnetwork numbers together are used for
routing, while the host number is used to address an individual host within
the network or subnetwork. A subnet mask is used to extract network and
subnetwork information from the IP address. Also called an Internet address.
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).