| DAT USB Drive | A DAT USB drive is a tape drive with digital audio tape (DAT) that can be plugged into a Universal Serial Bus (USB) connection as a simple and relatively low-cost way to back up data, especially data on servers. DAT USB makes tape backup for small businesses available in the hundreds (rather than thousands) of dollars for the first time. Tape is currently the most popular backup medium.
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| Data at Rest | Data at rest is a term that is sometimes used to refer to all data in computer storage while excluding data that is traversing a network or temporarily residing in computer memory to be read or updated. Data at rest can be archival or reference files that are changed rarely or never; data at rest can also be data that is subject to regular but not constant change. Examples include vital corporate files stored on the hard drive of an employee's notebook computer, files on an external backup medium, files on the servers of a storage area network (SAN), or files on the servers of an offsite backup service provider. |
| Data Glove | A data glove is an interactive device, resembling a glove worn on the hand, which facilitates tactile sensing and fine-motion control in robotics and virtual reality. Data gloves are one of several types of electromechanical devices used in haptics applications |
| Decoding | Decoding is the conversion of an encoded format back into the original sequence of characters. Encoding and decoding are used in data communications, networking, and storage. The term is especially applicable to radio (wireless) communications systems. |
| Desktop Management | Desktop management is a comprehensive approach to managing all the computers within an organization. Despite its name, desktop management includes overseeing laptops and other computing devices as well as desktop computers. Desktop management is a component of systems management, which is the administration of all components of an organization's information systems. Other components of systems management include network management and database management |
(DDNS) Dynamic Domain Name Services
| a service that associates your current dynamically assigned IP address (assigned by DHCP with a static domain name, allowing you to access your computer remotely, or set up a web, FTP, telnet, mail, or similar server on your machine using the static domain name.
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(DEN) Directory Enabled Network
| term used in conjunction with an architecture and grouping of networking capabilities that are developed and driven by a central directory. These capabilities can include Quality of Service, Policy Based Management, security functionality, authentication and authorization services, etc.
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Desktop
| a computer display area that represents the kinds of objects one might find on a real desktop: documents, phonebook, telephone, etc., and can be contained in a window or "full-screen".
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(DHCP) Dynamic Host Configuration Protocol
| provides a mechanism for allocating IP addresses dynamically so that addresses can be reused when hosts no longer need them. |
Directory
| the operational linchpin of almost all Middleware services. They can contain critical customization information for people, processes, resources and groups. By placing such information in a common storage area, diverse applications from diverse locations can access a consistent and comprehensive source for current values of key data. In future information technology environments, directories will be among the most critical services offered.
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Distribution Layer
| the distribution layer of the network is the demarcation point between the access and core layers and helps to define and differentiate the core. The purpose of this layer is to provide boundary definition and is the place at which packet manipulation can take place. In the campus environment, the distribution layer can include several functions, such as the following: Address or area aggregation, Departmental or workgroup access, Broadcast/multicast domain definition, Virtual LAN (vLAN) routing, Any media transitions that need to occur, Security.
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| Dolly | Dolly, also called Digital Dolly, is a program that can quickly clone (copy) drives to drives, drives to files, files to drives, or files to files. It is similar to the Symantec product known as Ghost. Dolly can also clone entire disk partitions in block-wise fashion. Dolly can be used to clone the operating system of a computer to numerous others |
(DNS) Domain Name System
| allows the Internet to locate and translate domain names into Internet Protocol (IP) addresses.
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Domain
| a sphere of knowledge identified by a name typically, a collection of facts about some program entities or a number of network points or addresses.
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(DSL) Digital Subscriber Lines
| public network technology that delivers high bandwidth over conventional copper wiring at limited distances. There are four types of DSL: ADSL, HDSL, SDSL, and VDSL. Asymmetrical, ADSL, which transmits an asymmetrical data stream with a higher downstream rate to the user and a slower upstream rate from the user to the network. ADSL has a range of downstream data rates that depend on distance from the serving central office. Single-line, SDSL, which provides symmetrical data, rates usually at 768kps for both downstream and upstream transmission. High data rate, HDSL, which requires two twisted-pair lines and operates in a duplex mode at a rate of 1.544MB both downstream and upstream. HDSL is designed primarily for WAN and LAN access. All are provisioned via modem pairs, with one modem located at a central office and the other at the customer site. Because most DSL technologies do not use the whole bandwidth of the twisted pair, there is room remaining for a voice channel.
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(DSSS) Direct-Sequence Spread-Spectrum
| generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered (and, of course, the more bandwidth required). Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low-power wide band noise and is rejected (ignored) by most narrowband receivers.
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(DTTV) Digital Terestial Televison
| broadcasts over earthbound circuits so sateliites aren't used for any part of the link between the broadcaster and the end user.
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DVD_RAM
| DVD technology for high-capcity data storage for computers.
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Dynamic Source Routing top | Dynamic Source Routing (DSR) is a self-maintaining routing protocol for wireless networks. The protocol can also function with cellular telephone systems and mobile networks with up to about 200 nodes. A Dynamic Source Routing network can configure and organize itself independently of oversight by human administrators. |
| E210 | used to document time worked, paid and unpaid leaves, holidays, vacation and sick leave accrual, etc. This electronic version has been developed to meet federal requirements while providing users with a more efficient way of entering 210 Forms. Information submitted on this form is maintained by the Controller's Office. |
| Early Adapter | An early adopter is a person who embraces new technology before most other people do. Early adopters tend to buy or try out new hardware items and programs, and new versions of existing programs, sooner than most of their peers. According to a theory called Diffusion of Innovations (DoI) formulated by Everett Rogers, early adopters make up 13.5 percent of the population. |
| EB14 | electronic document to transfer General Expenditures.
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| EB15 | electronic document to transfer Payroll Expenditures.
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| EDEM | electronic document to revise personal information.
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| Email Archiving | E-mail archiving is a systematic approach to saving and protecting the data contained in e-mail messages so it can be accessed quickly at a later date. In the past, companies often relied on end-users to maintain their own individual e-mail archives. The IT department would back up e-mail, but not in a manner that made messages searchable. If a specific e-mail needed to be traced, it often took weeks to find it. With today's compliance legislation and legal discovery rules, it has become necessary for many IT departments to manage the entire company's e-mail archiving in bulk so specific messages can be located in minutes, not weeks. |
Electronic Mail-EMail | name associated with various products and services that support the transmission of mail in an electronic form.
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| Email Extractor | An e-mail extractor is a program that finds e-mail addresses and stores them in a list file, with each line containing one e-mail address. The list can contain thousands of addresses and can be copied, modified, searched, or merged into other files. |
| Endcoding | In computers, encoding is the process of putting a sequence of characters (letters, numbers, punctuation, and certain symbols) into a specialized format for efficient transmission or storage. |
| Endpoint Security | Endpoint security is a strategy in which security software is distributed to end-user devices but centrally managed. Endpoint security systems work on a client/server model. A client program is installed on or downloaded to every endpoint, which, in this case, is every user device that connects to the corporate network. Endpoints can include PCs, laptops, handhelds, and specialized equipment such as inventory scanners and point-of-sale terminals. A server or gateway hosts the centralized security program, which verifies logins and sends updates and patches when needed. |
Engine
| program that performs a core or essential function for other programs.
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Enterprise | an organization that uses computers.
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(ENTL) Electronic New Hire/Termination/Leave of Absence
| electronic document used to set up new staff, termination, or leave. |
(EPR) Electronic Patient Record
| designed to allow fast and easy on-line access to each patient's records in all areas across the Hopkins continuum of care, thus enhancing patient care. Through EPR, the user can view patient data integrated from multiple sources, including Lab Results, Radiology Reports, ECG Reports, EEG Reports, OB Sonogram Reports, Discharge Summaries, Operative Notes, etc.
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Ethernet
| most widely-installed local area network technology.
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ETSO
| Enterprise Technical Services and Operations
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| ESAL | electronic document to revise salary information.
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Extranet
| private network that uses the Internet Protocol (IP) and the public telecommunication system to securely share part of a business's information or operations with suppliers, vendors, partners, customers, or other businesses.
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FAQ
top | Frequently Asked Questions
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(FERPA) Family Educational Rights and Privacy Act | a federal law designed to protect the privacy of a student's education records. |
FESTER
| Files Electronically Stored Temporarily for Exchange and Retrieval
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Firestarter | Firestarter is an open source firewall program for personal computers and servers that support Linux kernels 2.4 and 2.6. |
Firewall
| set of related programs, located at a network gateway server, that protects the resources of a private network from users from other networks.
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| Firewall Builder | Firewall Builder, also known as Fwbuilder, is a vendor-neutral configuration and management application for firewalls. The application was created for the Linux operating system; versions are available for other operating systems, including Windows and Macintosh. According to Fwbuilder's user guide, both network administrators and hobbyists managing home-based local area networks (LANs) can simplify management tasks with the application. Fwbuilder supports the OpenBSD Packet Filter, Cisco PIX Series security devices, and iptables and ipfilter Linux utilities. |
Firmware
| computer instruction sets provided through hardware (chip) technology.
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Frame Relay
| low-cost packet-switching protocol for connecting devices on a wide area network. Its success is primarily due to a single dominant application in the marketplace: as a replacement for leased lines for interconnecting local area data networks. As a result, about 90% of the traffic carried on frame relay networks has been Internet Protocol (IP) traffic. However many other applications are migrating to frame relay. These applications are no longer simply LAN and IP centric. They include legacy data applications (async, bisync, HDLC, etc.) as well as applications not traditionally thought of as frame services, such as voice, fax, voice-band data, and video conferencing.
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| Free BSD | FreeBSD is a popular free open source operating system that is based on the Berkeley Software Distribution (BSD) version of the Unix operating system. It runs on processors such as the Pentium that are compatible with Intel's x86 architecture and also on amd64, Alpha/AXP, IA-64, PC-98 and UltraSPARC processors. FreeBSD is an alternative to Linux that will run Linux applications. |
(FHSS) Frequency-Hopping Spread-Spectrum
| uses a narrowband carrier that changes frequency in a pattern known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. |
(FTP) File Transfer Protocol
| allows the user to easily transfer files between computers on the internet.
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| Full Text Database | A full-text database is a compilation of documents or other information in the form of a database in which the complete text of each referenced document is available for online viewing, printing, or downloading. In addition to text documents, images are often included, such as graphs, maps, photos, and diagrams. A full-text database is searchable by keyword, phrase, or both |
