Flashcards in NETWORK+ Terms F's Deck (21):
The automatic switching
from one device or system to another.
Servers can be configured in a
failover configuration so that if the
primary server fails, the secondary
server automatically takes over.
The IEEE 802.3u
specification for data transfers of up
to 100Mbps over twisted-pair cable.
See also 100BaseFX, 100BaseT, and
The capability of a
component, system, or network to
endure a failure.
A high-speed data transfer
technology designed to extend
the capabilities of existing LANs by
using a dual-ring topology and a
token-passing access method.
FDDI (Fiber Distributed Data
A technology that
divides the output channel into multiple
each of which uses a different frequency
A multiple access method
of transferring radio signals in the frequency-
hopping code division multiple
access (FH-CDMA) scheme.
FHSS (Frequency Hopping Spread
Also known as
fiber optics or optical fiber, a physical
medium that can conduct modulated
light transmissions. Compared
with other transmission media, fiberoptic
cable is more expensive, but it
is not susceptible to EMI or
crosstalk, and it is capable of high
data rates and increased distances.
A technology that
defines full gigabit-per-second data
transfer over fiber-optic cable.
Commonly used with storage area
network (SAN) implementations.
A program, system, device,
or group of devices that acts as a
barrier between one network and
another. Firewalls are configured to
enable certain types of traffic to pass
while blocking others.
A method of controlling
the amount of data transmitted
within a given period of time.
Different types of flow control exist.
See also dynamic window and static
form of radio modulation, this communication
information over a radio wave.
FM (Frequency Modulation)
The entire domain name. It specifies
the name of the computer, the
domain in which it resides, and the
top-level DNS domain (for example,
FQDN (fully qualified domain name)
method that uses the first 64
bytes of a frame to determine
whether the frame is corrupted. If
this first part is intact, the frame is
A grouping of information
transmitted as a unit across the network
at the data link layer of the
In a data
frame, the field that specifies the
length of a frame.
Frame Length field
In a data frame,
the field that names the protocol
being sent in the frame.
Frame Type field
The number of cycles
of an alternating current signal over
a unit of time. Frequency is
expressed in hertz.
that provides for the transfer
of files between two systems. FTP is
part of the TCP/IP suite and operates
at Layer 7 of the OSI model.
FTP (File Transfer Protocol)
connector used with coaxial cable.
In computing environments, it is
most commonly used to connect
cable modems to ISP equipment or
incoming cable feeds.
A backup in which
files, regardless of whether they
have been changed, are copied to
the backup medium. In a full backup,
the files’ archive bits are reset.