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Flashcards in NETWORK+ Terms B's Deck (35):
1

In ISDN, a 64Kbps channel that carries data.
See also D (delta) channel.

B (bearer) channel

2

A network segment that acts as a trunk between other network segments. ______ typically are high-bandwidth implementations such as fiber-optic cable.

backbone

3

A document or plan that defines what type of ______ are made, when, and what data
is backed up.

backup schedule

4

The width of the range
of electrical frequencies, or how
many channels the medium can support.
_______ correlates to the
amount of data that can traverse the
medium at one time, but other factors
determine the maximum speed
supported by a cable .

bandwidth

5

A term applied to any medium that can carry only a single data signal at a time. Compare with broadband.

baseband

6

A measurement of performance
of a device or system for
the purposes of future comparison.
_____ is a common server
administration task.

baselining

7

The speed or rate of
signal transfer. ___ ____ bandwidth
is measured in cycles per second, or
Hertz (Hz).

baud rate

8

A network wiring closet typically
housing wiring distribution equipment
and hardware. Two common
network

BDF (Building Distribution Frame):
BDFs are the Intermediate
Distribution Frame (IDF) and the
Main Distribution frame (MDF).

9

In a wireless network,
_____ refers to the continuous
transmission of small packets (beacons)
that advertise the presence of
a base station (access point).

beaconing

10

A test to see the number of received bits of
a data stream that has changed due
to noise, interference, or other distortion.

BERT (Bit-Error Rate Test)

11

Used between gateway hosts on the
Internet. _____ ____ ____ examines the routing table, which contains a list of known
routers, the addresses they can
reach, and a cost metric associated
with the path to each router so that
the best available route is chosen.
It communicates between the
routers using TCP.

BGP (Border Gateway Protocol.)

12

A base 2 numbering system
used in digital signaling. It uses only
the numbers 1 and 0.

binary

13

The process of associating
a protocol with a NIC.

binding

14

The science and technology
of measuring and analyzing
biological data. _____ is used
for security purposes to analyze and
compare characteristics such as
voice patterns, retina patterns, and
hand measurements.

biometrics

15

A basic set of instructions that a
device needs to operate.

BIOS (Basic Input/Output System)

16

An electronic digit used in the
binary numbering system. ____ is a
contraction of the terms binary and
digit.

bit

17

A total loss of electrical
power.

blackout

18

A low-cost, short-range
RF technology designed to replace
many of the cords used to connect
devices. It uses 2.4GHz RF
and provides transmission speeds up
to 24Mbps.

Bluetooth

19

A family of connectors
typically associated with thin coaxial
cabling and 10Base2 networks. ___
connectors use a twist-and-lock
mechanism to connect devices to
the network.

BNC (Bayonet Neill Concelman)
connector

20

______ is a TCP/IP protocol
used by a network device to
obtain an IP address and other network
information such as server
address and default gateway.

BOOTP

21

Describes any medium that has physical constraints, such as coaxial, fiber-optic,
and twisted pair. Compare with
unbound medium.

bound medium

22

Identifies the status of ports and
bridges across the network. ____
are simple data messages exchanged
between switches. They contain
information on ports and provide
the status of those ports to other
switches.

BPDU (Bridge Protocol Data Unit)

23

An ISDN digital communications line
that consists of three independent
channels: two B channels each at
64Kbps and one D channel at
16Kbps. ____ ____is often referred
to as 2B+D.

BRI (Basic Rate Interface)

24

A device that connects and
passes packets between two network
segments that use the same communications
protocol. ____ operate
at the data link layer of the OSI
model; filters, forwards, or
floods an incoming frame based on
the packet’s MAC address.

bridge

25

A list of MAC addresses that a bridge keeps
and uses when it receives packets.
The bridge uses the ____ ____ ____ to determine which segment
the destination address is on before it
sends the packet to the next interface
or drops the packet (if it is on the
same segment as the sending node).

bridging address table

26

A communications strategy that uses analog or digital signaling over multiple communications
channels.

broadband

27

A packet-delivery system
in which a copy of a packet is
transmitted to all hosts attached to
the network.

broadcast

28

An undesirable condition in which broadcasts become so numerous that they bog down the
flow of data across the network.

broadcast storm

29

A device that you can use
to combine the benefits of both
routers and bridges. Its common
usage is to route routable protocols
at the network layer of the OSI
model and to bridge nonroutable
protocols at the data link layer.

brouter

30

A short-term decrease in
the voltage level, usually caused by
the startup demands of other electrical
devices.

brownout

31

The ___ ____ ____ ___ is the
MAC address of the wireless access
point (AP).

BSSID (Basic Service Set
Identification)

32

An area of memory in a device used to temporarily store data before it is forwarded to another device or location.

buffer

33

A linear LAN architecture in which all devices connect to a common cable, called a bus or
backbone.

bus topology

34

The ____ ____ is typically
associated with telephony systems. It
is used to test and access the phone
line using clip wires that attach to
the phone cable.

butt set

35

A set of bits (usually 8) that
operate as a unit to signify a character.

byte