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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.
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