NETWORK+ Terms J,K,L's

Question 1

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

Answer 1

jumpered (or jumpering)

Question 2

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

Answer 2

jumperless

Question 3

1,000 bits.

Answer 3

Kb (kilobit)

Question 4

1,000 bytes.

Answer 4

KB (kilobyte)

Question 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.

Answer 5

Kerberos

Question 6

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

Answer 6

L2F (Layer 2 Forwarding)

Question 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.

Answer 7

L2TP (Layer 2 Tunneling Protocol)

Question 8

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

Answer 8

LACP (Link Aggregation Control

Protocol)

Question 9

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

Answer 9

LAN (local area network)

Question 10

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

Answer 10

latency

Question 11

A media connector

used with fiber-optic cabling.

Answer 11

LC connector

Question 12

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

Answer 12

LDAP

Question 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

Answer 13

learning bridge

Question 14

An older computer system

or technology.

Answer 14

legacy

Question 15

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

Answer 15

line conditioner

Question 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.

Answer 16

link light

Question 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.

Answer 17

link-state routing

Question 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.

Answer 18

Linux

Question 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.

Answer 19

LLC (logical link control) layer

Question 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.

Answer 20

LMHOSTS file

Question 21

The
addressing method used in providing
manually assigned node addressing.

Answer 21

logical addressing scheme

Question 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.

Answer 22

logical topology

Question 23

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

Answer 23

loop

Question 24

A device used for

loopback testing.

Answer 24

loopback plug

Question 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.

Answer 25

loopback testing