NETWORK+ Terms J,K,L's Flashcards
Refers to
the physical placement of shorting
connectors on a board or card.
jumpered (or jumpering)
A term used to
describe devices configured via a
software utility rather than by physical
jumpers on the circuit board.
jumperless
1,000 bits.
Kb (kilobit)
1,000 bytes.
KB (kilobyte)
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
A Cisco
tunneling protocol designed to
specifically tunnel point-to-point
protocol (PPP) traffic.
L2F (Layer 2 Forwarding)
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)
An IEEE specification
that provides a control method of
bundling several physical ports into
one single channel.
LACP (Link Aggregation Control
Protocol)
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)
The delay induced by a
piece of equipment or device used
to transfer data
latency
A media connector
used with fiber-optic cabling.
LC connector
A protocol used to access and query compliant directory services systems such as Microsoft Active Directory and Novell Directory services.
LDAP
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
An older computer system
or technology.
legacy
A device used to stabilize the flow of power to the connected component. Also known as a power conditioner or voltage regulator.
line conditioner
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
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
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
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
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
The
addressing method used in providing
manually assigned node addressing.
logical addressing scheme
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
A continuous circle that a
packet takes through a series of
nodes in a network until it eventually
times out.
loop
A device used for
loopback testing.
loopback plug
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
