Operating instructions

46 MIKE MEYERS A+ CERTIFICATION PASSPORT
Passport / Mike Meyers‘ A+ Certification Passport / Meyers / 226308-3 / Glossary
NetBEUI (NetBIOS Extended User Interface) A protocol supplied with all
Microsoft networking products that operates at the Transport layer. Also a pro
-
tocol suite that includes NetBIOS. NetBEUI does not support routing.
NetBIOS (network basic input/output system) A protocol that operates at
the Session layer of the OSI seven-layer model. This protocol creates and man
-
ages connections based on the names of the computers involved.
NetBIOS name A computer name that identifies both the specific machine
and the functions that machine performs. A NetBIOS name consists of 16 char
-
acters: 15 characters of a name, with a 16th character that is a special suffix that
identifies the role the machine plays.
NETSTAT A command-line utility used to examine the sockets-based connec
-
tions open on a given host.
network A collection of two or more computers interconnected by telephone
lines, coaxial cables, satellite links, radio, and/or some other communication
technique. A computer network is a group of computers that are connected to-
gether and that communicate with one another for a common purpose.
network ID A number that identifies the network on which a device or ma-
chine exists. This number exists in both IP and IPX protocol suites.
newsgroup The name for discussion groups on Usenet.
nibble A unit of four bits.
NIC (network interface card) An expansion card that enables a PC to physi
-
cally link to a network.
NiCd (nickel-cadmium) A type of battery that was used in the first portable
PCs. Heavy and inefficient, these batteries also suffered from a memory effect
that could drastically shorten the overall life of the battery. See also NiMH
(nickel metal hydride), Li-Ion (lithium ion).
NiMH (nickel metal hydride) A type of battery used in portable PCs. NiMH
batteries had fewer issues with the “memory” effect than NiCd batteries. NiMH
batteries have been replaced by lithium-ion batteries. See also NiCd (nickel-
cadmium), Li-Ion (lithium ion).
nit A value used to measure the brightness of an LCD display. A typical LCD
display has a brightness of between 100 and 400 nits.
P:\010Comp\Passport\308-3\gloss.vp
Monday, April 09, 2007 10:24:45 PM
Color profile: Generic CMYK printer profile
Composite Default screen