- D Channel - An ISDN signaling channel used to carry control signals and low speed data.
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- Data Transfer - The movement of data inside a computer system. Or this is the amount of data that you are allowed to transfer with your account.
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- Database - A database is a collection of information stored in a computer in a systematic way. Most popular open-source databases are MySql and PostgreSql.
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- Database Support - The project or software that provides support for databases.
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- Deactivation - Discontinuation of the activation of an entire zone or sub zone by the grantee or operator.
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- Dedicated Server - In the Web hosting business, a dedicated server refers to the rental and exclusive use of a computer that includes a Web server, related software, and connection to the Internet, housed in the Web hosting company's premises. A dedicated server is usually needed for a Web site (or set of related company sites) that may develop a considerable amount of traffic. The server can usually be configured and operated remotely from the client company.
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- Default delivery - Default Delivery in computer science refers to a delivery at default place that is value or address automatically assigned to a computer program or device, outside of user intervention.
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- Delegate - Transfer power to someone.
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- Deleted Domain - A domain that has removed from server.
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- DES - (Data Encryption Standard)
It is a widely used method of data encryption using a private (secret) key that was judged so difficult to break by the US government that it was restricted for exportation to other countries. More information here.
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- DHCP - Short for Dynamic Host Configuration Protocol, a protocol for assigning dynamic IP addresses to devices on a network. With dynamic addressing, a device can have a different IP address every time it connects to the network. DHCP also supports a mix of static and dynamic IP addresses.
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- Dial Up Internet Connection - Dial up Internet connections requires a modem that dials an access number provided by your local ISP. The user must submit a username and password to authenticate. Dial up Internet is slower than other forms, and is not dedicated, meaning it is not “always on” you must dial the service provider every time you want to connect to the Internet.
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- Dial-In - Where two modems link. Usually this is when you dial an Internet site/service provider. It dials just like a fax machine dials another fax.
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- Directions - A term synonymous with progression, two or three sentences of explanation.
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- Directory - In computing, a directory, catalog, or folder, is an entity in a file system which contains a group of files and other directories. A typical file system contains thousands of files, and directories help organize them by keeping related files together. A directory contained inside another directory is called a subdirectory of that directory.
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- Disk Space - Amount of bytes on a disk available for recording or storing data.
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- DNR - (Dynamic Noise Reduction)
A signal-processing circuit that attempts to reduce the level of high-frequency noise. Unlike Dolby NR, DNR doesn't require preprocessing during recording.
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- DNS - (Domain Naming System)
The Domain Name System is the system that translates Internet domain names into IP numbers. A "DNS Server" is a server that performs this kind of translation.
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- DNS Transfer - Refers to transfer of Domain Name Service.
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- Domain Aliasing - An alternative domain name that can be used instead of the primary domain name.
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- Domain Name - A domain name is the text name corresponding to the numeric IP address of a computer on the Internet. A domain name must be unique. Internet users access your website using your domain name.
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- Domain Name Registration - The process whereby a unique domain name is selected and registered by a user, giving the user the right to use that domain name for their Web site. Most Web hosts allow you to register a domain when you sign up for Web hosting.
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- Domain Parking - Parking simply means a Domain Name holder has not identified or does not know the IP addresses of the servers that will host his or her web site and wishes to reserve the name for later use.
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- Domain Renewal - Domains are leased on an annual basis, and need to be renewed once the current payment for the lease expires. If a domain is registered on April 15, 2003 and prepaid for one year, it will be due for renewal on April 15, 2004, at which point the registrant either pays for additional years, or lets the name expire. Domains can also be pre-paid for multiple years, up to a maximum of 10 years.
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- DOS Attack - A denial-of-service attack (also, DOS attack) is an attack on a computer system or network that causes a loss of service to users, typically the loss of network connectivity and services by consuming the bandwidth of the victim network or overloading the computational resources of the victim system.
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- Download - To copy a file from a remote computer to your computer. There are a few methods of doing this on the Internet. HTTP, FTP and e-mail attachments are the most common.
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- Drag-and-drop - The action of dragging an item with the mouse from one location to another, and releasing the mouse button at the destination.
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- Dreamweaver - An HTML editor available from Macromedia used to create web pages.
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- DSL - A family of digital telecommunications protocols designed to allow high speed data communication over the existing copper telephone lines between end-users and telephone companies.
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- Dynamic DNS - Dynamic DNS is a system for allowing an Internet domain name to be assigned to a varying IP address. This makes it possible for other sites on the Internet to establish connections to the machine without needing to track the IP address themselves.
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- Dynamic IP Address - An IP address that is assigned to a computer using DHCP. This IP address may change each time the computer connects to the network or even during the course of a network connection.
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