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RJ-45 connector
: An 8-pin connector
used between a twisted pair cable and a data
transmission device.
ROM (Read Only Memory)
: Perma-
nent memory.
Router
: Device that can connect individual
LANs and remote sites to a server.
Roaming
: The ability to use a wireless
device while moving from one access point
to another without losing the connection.
Script
: A macro or batch fi le contain-
ing instructions and used by a computer to
perform a task.
Server
: Any computer that makes fi les or
peripheral devices available to users of the
network and has a resident Network OS.
SMTP (Simple Mail Transfer Pro-
tocol)
: The protocol used to defi ne and
deliver electronic mail (e-mail) from one
location to another.
SNMP (Simple Network Manage-
ment Protocol
: An application layer
protocol that outlines the formal structure
for com mu ni ca tion among network devices.
Static IP Address
: A permanent IP
address is assigned to a node in a TCP/IP
network. Also known as global IP.
STP (Shielded Twisted Pair):
Twisted
Pair cable wrapped in a metal sheath to pro-
vide extra protection from external interfer-
ing signals.
Subnet Mask
: An eight-byte address
divided into 4 parts separated by periods.
TCP/IP (Transmission Control
Pro to col/Internet Protocol)
: Proto-
col used by computers when communicating
across the Internet or Intranet.
TFTP (Trivial File Transfer Pro-
tocol)
: Simple form of FTP (File Transfer
Protocol), which Uses UDP (User Datagram
Protocol), rather than TCP/IP for data trans-
port and provides no security features.
TKIP (Temporal Key Integrity
Pro to col)
: An encryption method replacing
WEP. TKIP uses random IV and frequent key
exchanges.
Topology
: The shape of a LAN (Local Area
Network) or other communications system.
Twisted Pair
: Cable that comprises 2 or
more pair of insulated wires twisted together.
UDP (User Datagram Protocol)
: A
com mu ni ca tion method (protocol) that offers
a limited amount of service when messages
are exchanged between computers in a net-
work. UDP is used as an alternative to TCP/IP.
Uplink
: Link to the next level up in a com-
munication hierarchy.
UTP (Unshielded Twisted Pair)
cable
: Two or more unshielded wires
twisted together to form a cable.
WAN (Wide Area Network)
: A net-
working system covering a wide geo graph i cal
area.
WEP (Wired Equivalent Privacy)
:
An encryption method based on 64 or 128bit
algorithm.
Web Browser
: A software program that
allows viewing of web pages.
Wi-Fi (Wireless Fidelity)
: An or ga -
ni za tion that tests and assures interoperability
among WLAN devices.
Wire Speed
: The maximum speed at
which a given packet can be transferred using
Ethernet and Fast Ethernet standard specifi ca-
tions.
WLAN (Wireless LAN)
: A LAN topol-
ogy using wireless devices.
VPN (Virtual Private Network):
A
security method to connect remote LAN us-
ers to a corporate LAN system.
