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GLOSSARY
176
Datagram Delivery Protocol (DDP) The
network-layer protocol that is responsible
for the socket-to-socket delivery of
datagrams over an AppleTalk network.
DDP See Datagram Delivery Protocol.
default area The preferred name for the
area in which preferences are stored.
Another name for the current area.
DHCP See Dynamic Host Configuration
Protocol.
DNS See Domain Name System.
Domain Name System (DNS) The system
used on the Internet for translating the name
of a network node to an IP address.
Dynamic Host Configuration Protocol A
mechanism for assigning an IP address
dynamically so that the address can be
reassigned when the original assignee no
longer needs it.
entity The unit of organization within an
entity. See also global protocol entity,
network connection entity, set entity.
global protocol entity An entity that
contains information shared by all
connections for a particular protocol.
ICMP See Internet Control Message
Protocol.
International Telecommunication Union
Telecommunication Standardization
Sector An international body that
develops worldwide standards for
telecommunications technologies.
Internet Control Message Protocol
(ICMP) A network-layer Internet protocol
that reports errors and provides other
information relevant to IP packet
processing.
Internet Protocol (IP) 1) A set of protocols
including TCP, UDP, and ICMP. IP provides
features for addressing, type-of-service
specification, fragmentation and reassembly,
and security. 2) An IP network-layer
protocol offering a connectionless
internetwork service.
Internetwork Packet Exchange (IPX) A
network-layer protocol used for transferring
data between clients and servers.
IP See Internet Protocol.
IP Control Protocol (IPCP) The protocol
that establishes and configures IP over PPP.
IPCP See IP Control Protocol.
IPX See Internetwork Packet Exchange.
ITU-T See International
Telecommunication Union
Telecommunication Standardization Sector.
LCP See Link Control Protocol.
Link Control Protocol (LCP) The protocol
that establishes, configures, and tests
data-link connections for use by PPP.
MAC address See media access control
address.
MacIP A network-layer protocol that
encapsulates IP packets in DDP packets for
transmission over AppleTalk and that also
provides proxy ARP services.
maximum transmission unit (MTU) The
maximum number of bytes in a packet.