MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

G-16 Glossary
frame A package of information transmitted on a network as a single unit. Frame is
a term most often used with Ethernet networks. A frame is similar to the packet
used in other networks. See also data frames, packet.
frame preamble Header information added to the beginning of a data frame in the
physical layer of the OSI reference model.
frame relay An advanced, fast-packet, variable-length, digital, packet-switching
technology. It is a point-to-point system that uses a private virtual circuit (PVC) to
transmit variable-length frames at the data-link layer of the OSI reference model.
Frame relay networks can also provide subscribers with bandwidth, as needed,
that allows users to make nearly any type of transmission.
front end In a client/server application, the part of the program carried out on the
client computer.
FTP See File Transfer Protocol (FTP).
full-duplex transmission Also called duplex transmission. Communication that
takes place simultaneously, in both directions. See also duplex transmission.
G
gateway A device used to connect networks using different protocols so that information
can be passed from one system to the other. Gateways function at the network
layer of the OSI reference model.
Gb See gigabit (Gb).
GB See gigabyte (GB).
gigabit (Gb) 1,073,741,824 bits. Also referred to as 1 billion bits.
gigabyte (GB) Commonly, 1000 megabytes. However, the precise meaning often
varies with the context. A gigabyte is 1 billion bytes. In the context of computing,
bytes are often expressed in multiples of powers of two. Therefore, a gigabyte can
also be either 1000 megabytes or 1024 megabytes, where a megabyte is considered
to be 1,048,576 bytes (2 raised to the 20th power).
Global Catalog A service and a physical storage location that contains a replica of
selected attributes for every object in Active Directory.
global group One type of group account used by Windows 2000 Server. Used across
an entire domain, global groups are created on domain controllers in the domain
in which the user accounts reside. Global groups can contain only user accounts
from the domain in which the global group is created. Members of global groups
obtain resource permissions when the global group is added to a local group. See
also group.