لطفا منتظر باشید ...
D
DFS path
The combination of a Distributed File System (DFS) root and a DFS link. An example of a DFS path is \\server\dfs\a\b\c\link, where \\server\dfs is the DFS root, and \a\b\c\ is the DFS link.See also DFS root.See also Distributed File System (DFS).
DFS root
The starting point of the Distributed File System (DFS) namespace. The root is often used to refer to the namespace as a whole. A root maps to one or more root targets, each of which corresponds to a shared folder on a server.See also Distributed File System (DFS).
dial-up connection
The connection to your network if you use a device that uses the telephone network. This includes modems with a standard telephone line, ISDN cards with highspeed ISDN lines, or X.25 networks. If you are a typical user, you might have one or two dial-up connections, for example, to the Internet and to your corporate network. In a more complex server situation, multiple network modem connections might be used to implement advanced routing.See also Integrated Services Digital Network (ISDN).
digital subscriber line (DSL)
A special communication line that uses modulation technology to maximize the amount of data that can be sent over a local-loop, copper-wire connection to a central phone office. DSL is used for connections from telephone switching stations to a subscriber rather than between switching stations.
Distributed File System (DFS)
A service that allows system administrators to organize distributed network shares into a logical namespace, enabling users to access files without specifying their physical location and providing load sharing across network shares.See also service.
domain administrator
A person who is a member of the Domain Admins group. Domain administrators can create, delete, and manage all objects that reside within the domain in which they are administrators. They can also assign and reset passwords and delegate administrative authority for network resources to other trusted users.See also resource.
domain controller
In an Active Directory forest, a server that contains a writable copy of the Active Directory database, participates in Active Directory replication, and controls access to network resources. Administrators can manage user accounts, network access, shared resources, site topology, and other directory objects from any domain controller in the forest.
domain local group
A security or distribution group that can contain universal groups, global groups, other domain local groups from its own domain, and accounts from any domain in the forest. Domain local security groups can be granted rights and permissions on resources that reside only in the same domain where the domain local group is located.See also global group.See also universal group.
Domain Name System (DNS)
A hierarchical, distributed database that contains mappings of DNS domain names to various types of data, such as IP addresses. DNS enables the location of computers and services by user-friendly names, and it also enables the discovery of other information stored in the database.See also IP address.See also service.See also Transmission Control Protocol/Internet Protocol (TCP/IP).
dynamic disk
A physical disk that provides features that basic disks do not, such as support for volumes that span multiple disks. Dynamic disks use a hidden database to track information about dynamic volumes on the disk and other dynamic disks in the computer. You convert basic disks to dynamic by using the Disk Management snap-in or the DiskPart command-line tool. When you convert a basic disk to dynamic, all existing basic volumes become dynamic volumes.See also basic disk.See also basic volume.See also dynamic volume.
Dynamic Host Configuration Protocol (DHCP)
A TCP/IP service protocol that offers dynamic leased configuration of host IP addresses and distributes other configuration parameters to eligible network clients. DHCP provides safe, reliable, and simple TCP/IP network configuration, prevents address conflicts, and helps conserve the use of client IP addresses on the network.DHCP uses a client/server model where the DHCP server maintains centralized management of IP addresses that are used on the network. DHCP-supporting clients can then request and obtain lease of an IP address from a DHCP server as part of their network boot process.See also IP address.See also service.See also Transmission Control Protocol/Internet Protocol (TCP/IP).
dynamic volume
A volume that resides on a dynamic disk. Windows supports five types of dynamic volumes: simple, spanned, striped, mirrored, and RAID-5. A dynamic volume is formatted by using a file system, such as file allocation table (FAT) or NTFS, and has a drive letter assigned to it.See also basic disk.See also basic volume.See also mirrored volume.See also RAID-5 volume.See also simple volume.See also spanned volume.See also striped volume.
dynamic-link library (DLL)
An operating system feature that allows executable routines (generally serving a specific function or set of functions) to be stored separately as files with .dll extensions. These routines are loaded only when needed by the program that calls them.
