Term
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Definition
| A switching technology that used fixed-length cells for faster switching of packets |
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Term
| Committed Information Rate (CIR) |
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Definition
| A minimum bandwidth that the carrier will guarantee per your organizations' data rate requirements |
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Term
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Definition
| The basic wireless standard with transmission rates up to 2 Mbps in the 2.4 GHz frequency range. |
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Term
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Definition
| Extension to the basic standard wireless with transmission rates up to 54 Mbps in the 5 GHz frequency range |
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Term
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Definition
| The basic standard for wireless personal area networks (WPANs) based on the Bluetooth v1.1 SIG specification, which includes data rate at up to 1 Mbps operating in the 2.4 GHz frequency range and at distances spanning less than 10 meters. |
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Term
| Permanent Virtual Circuit (PVC) |
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Definition
| A virtual circuit that established a permanent path or set of paths through the PDN and which an organization can use for data transmissions that require a specific and consistent bandwidth |
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Term
| Virtual Circuit Identifier (VCI) |
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Definition
| An identifier that specifies the path along which all packets form a particular transmission will travel from source to destination |
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Term
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Definition
| A connection-oriented method of directing packets through a packet-switched network |
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Term
| Connection-oriented Service |
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Definition
| A data transmission service in which a connection is established between source and destination LANs prior to the transmission of packets across the network |
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Term
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Definition
| A data transmission service in which the source and destination locations do not set up a specified path along which packets will travel, prior to the data transmission |
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Term
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Definition
| A packet that contains sufficient information to direct it from source to destination without a prior connection being established between the source and destination |
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Term
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Definition
| The process of waiting for a dial tone when a phone is taken off hook, dialing the telephone number of the remote location, waiting for the call to be answered, and ultimately the answering of the call of the remote location |
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Term
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Definition
| A communications method that creates a dedicated communications path between points A and B for the exclusive use of points A and B for the duration of the connection |
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Term
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Definition
| The software that is installed on a workstation computer to provide support for the workstation hardware and to provide services that are local to a specific workstation, such as local file storage, local printing services, local logon, among other services. |
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Term
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Definition
| The connection between two points |
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Term
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Definition
| The ISO and ITU standard that defines the architecture for directory services that are accessed by enterprise or global resources |
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Term
| Packet Assembler/ Disassemblers (PAD) |
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Definition
| device that prepares data packets from a LAN into the appropriate format for the carrier's packet-Switched network |
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Term
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Definition
| A high-speed data transmission service that can be provided by a carrier company such as MCI, Sprint, AT&T, or other carrier company |
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Term
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Definition
| Microsoft's version of a network operating system directory service |
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Term
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Definition
| The ability of an operating system to be easily reconfigured for different hardware platforms |
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Term
| Digital Subscriber Line Access Multiplexer (DSLAM) |
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Definition
| A device at a local exchange carrier's central office that receives and processes DSL data traffic. |
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Term
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Definition
| CPE that separates regular analog voice traffic from the digital computer traffc |
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Term
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Definition
| CPE that converts Ethernet 10BaseT packets from the computer into DSL signals that can be sent across the phone line to the carrier's central office |
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Term
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Definition
| A trusted VPN that adds QiS to ensure timely delivery of time-sensitive data across the Internet |
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Term
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Definition
| An ISP-controlled VPN that no one other than the customer can use for data transmission and that only the ISP can modify. |
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Term
| Virtual Private Network (VPN) |
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Definition
| A secure point-to-point connection between two private networks or between two network devices that uses a public network instead of a private communication channel as a backbone for data transmission |
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Term
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Definition
| The first onscreen text editor/ word processor for UNIX-based systems |
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Term
| Public Data Network (PDN) |
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Definition
| The packet-switched networks provided by carrier companies |
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Term
| Lightweight Directory Access Protocol (LDAP) |
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Definition
| A protocol that provides access to directory databases |
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Term
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Definition
| A Microsoft NT grouping of objects that share a common set of network resources |
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Term
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Definition
| A method of combining multiple separate signals into a composite signal for transmission across a communications channel |
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Term
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Definition
| The ability to manage network traffic characteristics and qualify network traffic types for more efficient routing and better data delivery performance |
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Term
| Committed Burst Size (CBS) |
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Definition
| Specifies that the burst of traffic released onto a frame relay network on average cannot exceed the CIR |
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Term
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Definition
| An exclusive communications channel provided by a carrier between two remote locations |
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Term
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Definition
| The software that interfaces between server hardware and the network to which the server is attached while at the same time providing users with controlled access to shared services on the network |
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Term
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Definition
| A service that translates, or resolves, Internet domains and computer names to IP addresses |
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Term
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Definition
| 1 trillion bytes or 8 trillion bits |
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Term
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Definition
| Applications, services, and functions that are converted or modified to run on another system |
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Term
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Definition
| Most common implementation of IP addressing today; each IP address is comprised of a 32-bit binary address that is divided into four 8-bit octets |
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Term
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Definition
| a number that defines a range of IP addresses that can be used in a network. They are used to designate subnetworks, or subnets, which are typically local networks LANs that are connected to the Internet. |
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Term
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Definition
| Requires that each device be manually configured with an IP address |
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Term
| Dynamic Host COnfiguration Protocol (DHCP) |
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Definition
| Automatic assignment of IP addresses |
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Term
| Media Access Control (MAC) address |
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Definition
| a hardware address that uniquely identifies each node of a network |
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Term
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Definition
| a unique 32-bit identifying number that every machine on the Internet has |
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Term
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Definition
| defines the conceptual layout of a LAN, or the way in which data flows across the LAN. |
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Term
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Definition
| defines the actual physical layout of the LAN and the configuration of the cabling, computers, printers, and other devices on the LAN. |
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Term
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Definition
| is comprised of a shared network medium to which various network devices are attached, and every connected device hears every data transmission on the network. |
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Term
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Definition
| is comprised of network devices, data transmission media, and a centralized device that provides connectivity among all attached devices. |
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Term
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Definition
| all network devices are connected in a closed loop, and the data flows from device to device in a unidirectional fashion, around the ring. |
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Term
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Definition
| use radio frequencies instead of cables as the transmission medium. |
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Term
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Definition
| the way in which data accesses network media and the structure of the data frames that are placed on the media. |
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Term
| Integrated Services Digital Network (ISDN) |
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Definition
| a digital circuit-switched service |
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Term
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Definition
| an ANSI standard for high-speed data communications over fiber-optic cables. |
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Term
| Asynchronous Transfer Mode (ATM) |
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Definition
| is the widely accepted standard of cell relay technology. |
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Term
| Wireless MAN/WAN services |
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Definition
| provide shared bandwidth of up to 70 Mbps over a 30-mile non-line-of-sight range. |
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Term
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Definition
| Wireless MAN/WAN services; follows IEEE 802.16 standards |
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Term
| Carrier Sense Multiple Access / Collision Detection (CSMA/CD) |
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Definition
| a set of rules determining how network devices respond when two devices attempt to use a data channel simultaneously (called a collision). |
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Term
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Definition
| ensures that the sending device that detects the collision sends out a signal to all other devices to indicate that a collision has taken place. |
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Term
| Physical Star/Logical Ring Topology |
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Definition
| A topology in which computing devices connect to a central hub, but the data flows sequentially from port to port through the hub and around the ring |
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Term
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Definition
| A topology in which all network devices are connected in a closed loop, or ring, and the data flows from device to device, in a unidirectional fashion, around the ring. |
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Term
| Physical Star/ Logical Star Topology |
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Definition
| A star topology that has the physical configuration of a star, but the flow of data emanates only to intended recipients |
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Term
| Physical Star/Logical Bus Topology |
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Definition
| A LAN topology with the physical configuration of a star, but the data flows in all directions across the LAN as if the topology were a bus |
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Term
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Definition
| Defines the actual structure or configuration that you can see or touch. It's the configuration of cabling, computers, printers, and other devices on the network |
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Term
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Definition
| Defines the conceptual network layout, which you can regard as the way that data travels or flows across the network |
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Term
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Definition
| The map or layout of a local area network |
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Term
| Physical Ring/ Logical Ring Topology |
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Definition
| A topology in which each computing device is connected to each adjacent device to form a physical ring, and the data flows sequentially form device to device |
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