NETWORK+ Terms J,K,L's Flashcards Preview

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Flashcards in NETWORK+ Terms J,K,L's Deck (25):
1

Refers to
the physical placement of shorting
connectors on a board or card.

jumpered (or jumpering)

2

A term used to
describe devices configured via a
software utility rather than by physical
jumpers on the circuit board.

jumperless

3

1,000 bits.

Kb (kilobit)

4

1,000 bytes.

KB (kilobyte)

5

A network authentication
protocol designed to ensure that the
data sent across networks is encrypted
and safe from attack. Its primary
purpose is to provide authentication
for client/server applications.

Kerberos

6

A Cisco
tunneling protocol designed to
specifically tunnel point-to-point
protocol (PPP) traffic.

L2F (Layer 2 Forwarding)

7

A VPN protocol that defines its
own tunneling protocol and works
with the advanced security methods
of IPSec. L2TP enables PPP sessions
to be tunneled across an
arbitrary medium to a home gateway
at an ISP or corporation.

L2TP (Layer 2 Tunneling Protocol)

8

An IEEE specification
that provides a control method of
bundling several physical ports into
one single channel.

LACP (Link Aggregation Control
Protocol)

9

A group
of connected computers located in a
single geographic area—usually a
building or office—that share data
and services.

LAN (local area network)

10

The delay induced by a
piece of equipment or device used
to transfer data

latency

11

A media connector
used with fiber-optic cabling.

LC connector

12

A protocol used to access
and query compliant directory services
systems such as Microsoft
Active Directory and Novell
Directory services.

LDAP

13

A bridge that
builds its own bridging address table
instead of requiring someone to
manually enter information. Most
modern bridges are learning
bridges. Also called a smart bridge

learning bridge

14

An older computer system
or technology.

legacy

15

A device used to
stabilize the flow of power to the
connected component. Also known
as a power conditioner or voltage
regulator.

line conditioner

16

An LED on a networking
device such as a hub, switch, or
NIC. The illumination of the link
light indicates that, at a hardware
level, the connection is complete
and functioning.

link light

17

A dynamic routing
method in which routers tell
neighboring routers of their existence
through packets called linkstate
advertisements (LSAs). By
interpreting the information in
these packets, routers can create
maps of the entire network.
Compare with distance-vector
routing.

link-state routing

18

A UNIX-like operating system
kernel created by Linus
Torvalds. Linux is distributed under
an open-source license agreement,
as are many of the applications and
services that run on it.

Linux

19

A
sublayer of the data link layer of the
OSI model. The LLC layer provides
an interface for network layer
protocols and the MAC sublayer.

LLC (logical link control) layer

20

A text file used in a
Windows network environment that
contains a list of NetBIOS hostname-
to-IP address mappings used
in TCP/IP name resolution.

LMHOSTS file

21

The
addressing method used in providing
manually assigned node addressing.

logical addressing scheme

22

The appearance
of the network to the devices that
use it, even if in physical terms the
layout of the network is different.
See also physical topology.

logical topology

23

A continuous circle that a
packet takes through a series of
nodes in a network until it eventually
times out.

loop

24

A device used for
loopback testing.

loopback plug

25

A troubleshooting
method in which the output and
input wires are crossed or shorted in
a manner that enables all outgoing
data to be routed back into the card.

loopback testing