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Glossary of Terms
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Term
Definition
pps
(packets per second) The rate at which packets are delivered to their destination. See
also, Forwarding Rate, Packet, and Packet Switching Network.
PPTP
(Point-to-Point Tunneling Protocol) Developed jointly by Microsoft Corporation, U.S.
Robotics, and several remote access vendor companies, known collectively as the PPTP
Forum, PPTP is a new technology used for creating Virtual Private Networks (VPNs).
Because the Internet is essentially an open network, PPTP is used to ensure that
messages transmitted from one VPN node to another are secure. PPTP allows users to
dial in to their corporate networks via the Internet. See also, Internet, Tunneling, and
VPN.
Preamble
In wireless networks, part of the wireless signal that synchronizes network traffic.
Print Billing
Command
Authentication, Authorization and Accounting configuration that allows the NSE to
support Driverless Print servers that can bill subscribers’rooms for printing their
documents without them having to install printers.
Profile
An electronic file that defines how subscribers normally interact with the service
provider’s network.
Protocol
A standard process consisting of a set of rules and conditions that regulates data
transmissions between computing devices. Some examples of protocols include HTTP
(HyperText Transfer Protocol), FTP (File Transfer Protocol), TCP/IP (Transmission Control
Protocol/Internet Protocol), and POP (Post Office Protocol). All these protocols are
responsible for regulating the transmission of their specific data file types.
QoS
(Quality of Service) A collective measure of the level of service delivered to the
customer. QoS can be characterized by several basic performance criteria, including
availability (low downtime), error performance, response time and throughput, lost calls
or transmissions due to network congestion, connection set-up time, and the speed of
fault detection and correction. Service providers may guarantee a particular level of QoS
(defined by a service level agreement) to their subscribers. QoS-enabled hardware and
software solutions sort and classify IP packet requests into different traffic classes and
allocate the proper resources to direct traffic based on various criteria, including
application type, user or application ID, source or destination IP address, time of day,
and other user-specified variables. See also, CoS and ToS.
RADIUS
(Remote Authentication Dial-In User Service) An authentication and accounting system
used by many Internet Service Providers (ISPs). When you dial in to the ISP you must
enter your username and password. This information is passed to a RADIUS server
which checks that the information is correct and then authorizes access to the ISP
system.
RFC
(Request for Comments) A series of notes about the Internet, started in 1969 (when the
Internet was the ARPANET). An RFC note can be submitted by anyone. Each RFC is
designated by an RFC number. Once published, an RFC never changes. Any
modifications to an original RFC are assigned a new RFC number.
Roaming
In wireless networking, roaming refers to the ability to move from one AP coverage area
to another without interruption in service or loss in connectivity.
Round Robin
Queuing
An algorithm that services each queue in a predefined sequence. For example, it might
empty 1,500 bytes apiece from queue 1 (high priority), queue 2 (medium priority), and
queue 3 (low priority), servicing each in turn.
Router
A hardware device that connects two or more networks and routes the incoming data
Summary of Contents for AG 2300
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