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Appendix E Glossary
E
Passphrase - A passphrase is generally longer than a password and may contain letters and numbers.
PC Card
(originally PCMCIA) - is the form factor of a peri pheral interface designed for laptop computers. It was originally for memory
expansion, but the existence of a usable general standard for notebook peripherals led to many kinds of devices being made
available in this form. Typical devices include network cards, modems, and hard disks.
Ping
(Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online.
Port – Describes an interface between the operating system, applications, and Internet.
Port forwarding – Is a technology to enable implementation of ports on IP addresses in NAT networks (Network Address Translation).
PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be tunneled through an IP
network. This protocol is also used as a type of broadband connection in Europe.
Preamble
- Part of the wireless signal that synchronizes network traffic.
RADIUS
(Remote Authentication Dial-In User Service) - A protocol that uses an authentication server to control network access.
RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires.
Roaming
- The ability to take a wireless device from one access point's range to another without losing the connection.
Router - A networking device that connects multiple networks together.
RTS
(Request To Send) - A networking method of coordinating large packets through the RTS Threshold setting.
Server
- Any computer whose function in a network is to provide user access to files, printing, communications, and other services.
Spread Spectrum - Wideband radio frequency technique used for more reliable and secure data transmission.
SSID (Service Set IDentifier) – network name in WLAN, allows stations in the WLAN to find the correct access point.
Static IP Address - A fixed address assigned to a computer or device that is connected to a network.
Subnet Mask - An address code that determines the size of the network.
TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of
data sent.
TCP/IP (Transmission Con trol Protoco l/Internet Protoco l) – Thi s is the tr ansport protoco l on whi ch the data tr ansmission on the
internet is based.
TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password capability.
Throughput - The amount of data moved successfully from one node to another in a given time period.
TKIP (T emporal K ey Inte grity Protoco l) - a wirel ess encryption pro tocol t hat pro vides d ynamic e ncryption k eys for each pack et
transmitted.
TX Rate - Transmission Rate.
UDP (User Datagram Protocol) - A network protocol for transmitting data that does not require acknowledgement from the recipient of
the data that is sent.
UMTS Universa l M obile Telecommunica tions Sy stem (UMTS) - i s on e of the th ird-generation ( 3G) cell phone t echnologies.
Currently, th e most com mon form uses W-CDMA as t he un derlying a ir interface, is s tandardized by the 3GPP, and is t he
European answer to the ITU IMT-2000 requirements for 3G cellular radio systems.
Upgrade - To replace existing software or firmware with a newer version.
Upload - To transmit a file over a network.
URL (Uniform Resource Locator) - The address of a file located on the Internet.
VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another over the Internet.
WAN (Wide Area Network) – A Wide Area Network is a network mainly working across great distances.
WEP
(Wired Equivalent Privacy) – Describes a 128 bit encryption process used for wireless LANs.
WiMAX
（
Worldwide Interoperability for Microwave Access
）－
is a telecommunications technology aimed at providing wireless data over
Mobile Router
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